Anthropology exam

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UMUC Biology 102/103 Lab 1: Introduction to Science Answer Key

This contains 100% correct material for UMUC Biology 103 LAB01. However, this is an Answer Key, which means, you should put it in your own words. Here is a sample for the questions answered:

Exercise 1: Data Interpretation  (2 pts each)

1. What patterns do you observe based on the information in Table 4?

No fish are present when the dissolved oxygen is zero. When there is more dissolved oxygen in the water, more fish are present. However, the number of fish tends to drop or level off when the dissolved oxygen is higher than 12 ppm.

 

2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.

Possible Hypotheses:

1.    The amount of dissolved oxygen affects the number of fish that can live in a body of water.

2.    As dissolved oxygen concentration increases, more fish can live in the body of water.

3.    There is an ideal dissolved oxygen concentration for fish to live in.

 

The rest of the questions are answered in full version:

1.    What would your experimental approach be to test this hypothesis?

 

 

2.    What would be the independent and dependent variables?

 

 

3.    What would be your control?

 

 

4.    What type of graph would be appropriate for this data set?  Why?

 

 

5.    Graph the data from Table 4: Water Quality vs. Fish Population (found at the beginning of this exercise).

 

 

6.    Interpret the data from the graph made in Question 7.

 

 

 

Exercise 2: Experimental Variables

Determine the variables tested in the each of the following experiments. If applicable, determine and identify any positive or negative controls.

  

Observations

1.    A study is being done to test the effects of habitat space on the size of fish populations. Different sized aquariums are set up with six goldfish in each one. Over a period of six months, the fish are fed the same type and amount of food. The aquariums are equally maintained and cleaned throughout the experiment. The temperature of the water is kept constant. At the end of the experiment the number of surviving fish is surveyed.

A.    Independent Variable:

 

 

B.    Dependent Variable:

 

 

C.   Controlled Variables/Constants:

 

 

D.   Experimental Controls/Control Groups:

 

 

2.    To determine if the type of agar affects bacterial growth, a scientist cultures E. coli on four different types of agar. Five petri dishes are set up to collect results:

§  One with nutrient agar and E. coli

§  One with mannitol-salt agar and E. coli

 

§  One with MacConkey agar and E. coli

§  One with LB agar and E. coli

§  One with nutrient agar but NO E. coli

 

All of the petri dishes received the same volume of agar, and were the same shape and size. During the experiment, the temperature at which the petri dishes were stored, and at the air quality remained the same. After one week the amount of bacterial growth was measured.

A.    Independent Variable:

 

 

B.    Dependent Variable:

 

C.   Controlled Variables/Constants:

 

 

D.  Experimental Controls/Control Groups:

Exercise 3: Testable Observations

Determine which of the following observations are testable. For those that are testable:

Determine if the observation is qualitative or quantitative

Write a hypothesis and null hypothesis

What would be your experimental approach?

What are the dependent and independent variables?

What are your controls – both positive and negative?

How will you collect your data?

How will you present your data (charts, graphs, types)?

How will you analyze your data?

 

Observations

1.    A plant grows three inches faster per day when placed on a window sill than it does when placed on a on a coffee table in the middle of the living room.

 

 

2.    The teller at the bank with brown hair and brown eyes is taller than the other tellers.

 

 

 

3.    When Sally eats healthy foods and exercises regularly, her blood pressure is 10 points lower than when she does not exercise and eats fatty foods.

 

 

 

4.    The Italian restaurant across the street closes at 9 pm but the one two blocks away closes at 10 pm.

 

 

5.    For the past two days, the clouds have come out at 3 pm and it has started raining at 3:15 pm.

 

 

 

6.    George did not sleep at all the night following the start of daylight savings.

 

 

 

Exercise 4: Conversion

For each of the following, convert each value into the designated units.

 

 

1.    46,756,790 mg = _______ kg

 

 

2.    5.6 hours = ________ seconds

 

 

3.    13.5 cm = ________ inches

 

 

4.    47 °C = _______ °F

 

 

 

 

Exercise 5: Accuracy vs. Precision

For the following, determine whether the information is accurate, precise, both or neither.

 

1.    During gym class, four students decided to see if they could beat the norm of 45 sit-ups in a minute. The first student did 64 sit-ups, the second did 69, the third did 65, and the fourth did 67.

 

 

2.    The average score for the 5th grade math test is 89.5. The top 5th graders took the test and scored 89, 93, 91 and 87.

 

3.    Yesterday the temperature was 89 °F, tomorrow it’s supposed to be 88 °F and the next day it’s supposed to be 90 °F, even though the average for September is only 75 °F degrees!

 

4.    Four friends decided to go out and play horseshoes. They took a picture of their results shown to the right:

 

 

 

 

5.    A local grocery store was holding a contest to see who could most closely guess the number of pennies that they had inside a large jar. The first six people guessed the numbers 735, 209, 390, 300, 1005 and 689. The grocery clerk said the jar actually contains 568 pennies. 

 

 

Exercise 6: Significant Digits and Scientific Notation

Part 1: Determine the number of significant digits in each number and write out the specific significant digits.

 

1.    405000

 

 

2.    0.0098

 

 

3.    39.999999

 

 

4.    13.00

 

 

5.    80,000,089

 

 

6.    55,430.00

 

 

7.    0.000033

 

 

8.    620.03080

 

Part 2: Write the numbers below in scientific notation, incorporating what you know about significant digits.

 

1.    70,000,000,000

 

 

2.    0.000000048

 

 

3.    67,890,000

 

 

4.    70,500

 

 

5.    450,900,800

 

 

6.    0.009045

 

 

7.    0.023

 

 

 

 
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NURS 6630 Final Exam (2018), NURS 6630 Midterm Exam (2018): Walden University (Already graded A)

  

                                    NURS6630 Final Exam (2018): Walden University

QUESTION 1 

What will the PMHNP most likely prescribe to a patient with psychotic aggression who needs to manage the top-down cortical control and the excessive drive from striatal hyperactivity? 

A. Stimulants B. Antidepressants C. Antipsychotics D. SSRIs 

QUESTION 2 

The PMHNP is selecting a medication treatment option for a patient who is exhibiting psychotic behaviors with poor impulse control and aggression. Of the available treatments, which can help temper some of the adverse effects or symptoms that are normally caused by D2 antagonism? 

A. First-generation, conventional antipsychotics B. First-generation, atypical antipsychotics C. Second-generation, conventional antipsychotics D. Second-generation, atypical antipsychotics 

QUESTION 3 

The PMHNP is discussing dopamine D2 receptor occupancy and its association with aggressive behaviors in patients with the student. Why does the PMHNP prescribe a standard dose of atypical antipsychotics? 

A. The doses are based on achieving 100% D2 receptor occupancy. B. The doses are based on achieving a minimum of 80% D2 receptor occupancy. C. The doses are based on achieving 60% D2 receptor occupancy. D. None of the above. 

QUESTION 4 

Why does the PMHNP avoid prescribing clozapine (Clozaril) as a first-line treatment to the patient with psychosis and aggression? 

A. There is too high a risk of serious adverse side effects. B. It can exaggerate the psychotic symptoms. C. Clozapine (Clozaril) should not be used as high-dose monotherapy. D. There is no documentation that clozapine (Clozaril) is effective for patients who are violent. 

QUESTION 5 

The PMHNP is caring for a patient on risperidone (Risperdal). Which action made by the PMHNP exhibits proper care for this patient? 

A. Explaining to the patient that there are no risks of EPS B. Prescribing the patient 12 mg/dail C. Titrating the dose by increasing it every 5–7 days D. Writing a prescription for a higher dose of oral risperidone (Risperdal) to achieve high D2 receptor occupancy 

QUESTION 6 

The PMHNP wants to prescribe Mr. Barber a mood stabilizer that will target aggressive and impulsive symptoms by decreasing dopaminergic neurotransmission. Which mood stabilizer will the PMHNP select? A. Lithium (Lithane) B. Phenytoin (Dilantin) C. Valproate (Depakote) D. Topiramate (Topamax) 

QUESTION 7 

The parents of a 7-year-old patient with ADHD are concerned about the effects of stimulants on their child. The parents prefer to start pharmacological treatment with a non-stimulant. Which medication will the PMHNP will most likely prescribe? 

A. Strattera B. Concerta C. Daytrana D. Adderall 

QUESTION 8

8 The PMHNP understands that slow-dose extended release stimulants are most appropriate for which patient with ADHD? 

A. 8-year-old patient B. 24-year-old patient C. 55-year-old patient D. 82-year-old patient 

QUESTION 9 

A patient is prescribed D-methylphenidate, 10-mg extended-release capsules. What should the PMHNP include when discussing the side effects with the patient? 

A. The formulation can have delayed actions when taken with food. B. Sedation can be a common side effect of the drug. C. The medication can affect your blood pressure. D. This drug does not cause any dependency. 

QUESTION 10 

The PMHNP is teaching parents about their child’s new prescription for Ritalin. What will the PMHNP include in the teaching? 

A. The second dose should be taken at lunch. B. There are no risks for insomnia. C. There is only one daily dose, to be taken in the morning. D. There will be continued effects into the evening. 

QUESTION 11 

A young patient is prescribed Vyvanse. During the follow-up appointment, which comment made by the patient makes the PMHNP think that the dosing is being done incorrectly? 

A. “I take my pill at breakfast.” B. “I am unable to fall asleep at night.” C. “I feel okay all day long.” D. “I am not taking my pill at lunch.” 

QUESTION 12 

A 14-year-old patient is prescribed Strattera and asks when the medicine should be taken. What does the PMHNP understand regarding the drug’s dosing profile? 

A. The patient should take the medication at lunch. B. The patient will have one or two doses a day. C. The patient will take a pill every 17 hours. D. The dosing should be done in the morning and at night. 

QUESTION 13 

The PMHNP is meeting with the parents of an 8-year-old patient who is receiving an initial prescription for D-amphetamine. The PMHNP demonstrates appropriate prescribing practices when she prescribes the following dose: 

A. The child will be prescribed 2.5 mg. B. The child will be prescribed a 10-mg tablet. C. The child’s dose will increase by 2.5 mg every other week. D. The child will take 10–40 mg, daily. 

QUESTION 14 

A patient is being prescribed bupropion and is concerned about the side effects. What will the PMHNP tell the patient regarding bupropion? 

A. Weight gain is not unusual. B. Sedation may be common. C. It can cause cardiac arrhythmias. D. It may amplify fatigue. 

QUESTION 15 

Which patient will receive a lower dose of guanfacine? 

A. Patient who has congestive heart failure B. Patient who has cerebrovascular disease C. Patient who is pregnant D. Patient with kidney disease 

QUESTION 16 

An 18-year-old female with a history of frequent headaches and a mood disorder is prescribed topiramate (Topamax), 25 mg by mouth daily. The PMHNP understands that this medication is effective in treating which condition(s) in this patient? 

A. Migraines B. Bipolar disorder and depression C. Pregnancy-induced depression D. Upper back pain 

QUESTION 17 

The PMHNP is treating a patient for fibromyalgia and is considering prescribing milnacipran (Savella). When prescribing this medication, which action is the PMHNP likely to choose? 

A. Monitor liver function every 6 months for a year and then yearly thereafter. B. Monitor monthly weight. C. Split the daily dose into two doses after the first day. D. Monitor for occult blood in the stool. 

QUESTION 18 

The PMHNP is assessing a patient she has been treating with the diagnosis of chronic pain. During the assessment, the patient states that he has recently been having trouble getting to sleep and staying asleep. Based on this information, what action is the PMHNP most likely to take? 

A. Order hydroxyzine (Vistaril), 50 mg PRN or as needed B. Order zolpidem (Ambien), 5mg at bedtime C. Order melatonin, 5mg at bedtime D. Order quetiapine (Seroquel), 150 mg at bedtime 

QUESTION 19 

The PMHNP is assessing a female patient who has been taking lamotrigine (Lamictal) for migraine prophylaxis. After discovering that the patient has reached the maximum dose of this medication, the PMHNP decides to change the patient’s medication to zonisamide (Zonegran). In addition to evaluating this patient’s day-to-day activities, what should the PMHNP ensure that this patient understands? 

A. Monthly blood levels must be drawn. B. ECG monitoring must be done once every 3 months. C. White blood cell count must be monitored weekly. D. This medication has unwanted side effects such as sedation, lack of coordination, and drowsiness. 

QUESTION 20 

A patient recovering from shingles presents with tenderness and sensitivity to the upper back. He states it is bothersome to put a shirt on most days. This patient has end stage renal disease (ESRD) and is scheduled to have hemodialysis tomorrow but states that he does not know how he can lie in a recliner for 3 hours feeling this uncomfortable. What will be the PMHNP’s priority? 

A. Order herpes simplex virus (HSV) antibody testing B. Order a blood urea nitrogen (BUN) and creatinine STAT C. Prescribe lidocaine 5% D. Prescribe hydromorphone (Dilaudid) 2mg 

QUESTION 21 

The PMHNP prescribed a patient lamotrigine (Lamictal), 25 mg by mouth daily, for nerve pain 6 months ago. The patient suddenly presents to the office with the complaint that the medication is no longer working and complains of increased pain. What action will the PMHNP most likely take? 

A. Increase the dose of lamotrigine (Lamictal) to 25 mg twice daily. B. Ask if the patient has been taking the medication as prescribed. C. Order gabapentin (Neurontin), 100 mg three times a day, because lamotrigine (Lamictal) is no longer working for this patient. D. Order a complete blood count (CBC) to assess for an infection. 

QUESTION 22 

An elderly woman with a history of Alzheimer’s disease, coronary artery disease, and myocardial infarction had a fall at home 3 months ago that resulted in her receiving an open reduction internal fixation. While assessing this patient, the PMHNP is made aware that the patient continues to experience mild to moderate pain. What is the PMHNP most likely to do? 

A. Order an X-ray because it is possible that she dislocated her hip. B. Order ibuprofen (Motrin) because she may need long-term treatment and chronic pain is not uncommon. C. Order naproxen (Naprosyn) because she may have arthritis and chronic pain is not uncommon. D. Order Morphine and physical therapy. 

QUESTION 23 

The PMHNP is assessing a 49-year-old male with a history of depression, post-traumatic stress disorder (PTSD), alcoholism with malnutrition, diabetes mellitus type 2, and hypertension. His physical assessment is unremarkable with the exception of peripheral edema bilaterally to his lower extremities and a chief complaint of pain with numbness and tingling to each leg 5/10. The PMHNP starts this patient on a low dose of doxepin (Sinequan). What is the next action that must be taken by the PMHNP? 

A. Orders liver function tests. B. Educate the patient on avoiding grapefruits when taking this medication. C. Encourage this patient to keep fluids to 1500 ml/day until the swelling subsides. D. Order a BUN/Creatinine test. 

QUESTION 24 

The PMHNP is evaluating a 30-year-old female patient who states that she notices pain and a drastic change in mood before the start of her menstrual cycle. The patient states that she has tried diet and lifestyle changes but nothing has worked. What will the PMHNP most likely do? A. Prescribe Estrin FE 24 birth control B. Prescribe ibuprofen (Motrin), 800 mg every 8 hours as needed for pain C. Prescribe desvenlafaxine (Pristiq), 50 mg daily D. Prescribe risperidone (Risperdal), 2 mg TID 

QUESTION 25 

A patient with chronic back pain has been prescribed a serotonin-norepinephrine reuptake inhibitor (SNRI). How does the PMHNP describe the action of SNRIs on the inhibition of pain to the patient? 

A. “The SNRI can increase noradrenergic neurotransmission in the descending spinal pathway to the dorsal horn.” B. “The SNRI can decrease noradrenergic neurotransmission in the descending spinal pathway to the dorsal horn.” C. “The SNRI can reduce brain atrophy by slowing the gray matter loss in the dorsolateral prefrontal cortex.” D. “The SNRI can increase neurotransmission to descending neurons.” 

QUESTION 26 

A patient with fibromyalgia and major depression needs to be treated for symptoms of pain. Which is the PMHNP most likely to prescribe for this patient? 

Venlafaxine (Effexor) 

Duloxetine (Cymbalta) 

Clozapine (Clozaril) 

Phenytoin (Dilantin) 

QUESTION 27 

The PMHNP prescribes gabapentin (Neurontin) for a patient’s chronic pain. How does the PMHNP anticipate the drug to work? 

A. It will bind to the alpha-2-delta ligand subunit of voltage-sensitive calcium channels. B. It will induce synaptic changes, including sprouting. C. It will act on the presynaptic neuron to trigger sodium influx. D. It will inhibit activity of dorsal horn neurons to suppress body input from reaching the brain. 

QUESTION 28 

Mrs. Rosen is a 49-year-old patient who is experiencing fibro-fog. What does the PMHNP prescribe for Mrs. Rosen to improve this condition? A. Venlafaxine (Effexor) B. Armodafinil (Nuvigil) C. Bupropion (Wellbutrin) D. All of the above 

QUESTION 29 

The PMHNP is caring for a patient with fibromyalgia. Which second-line treatment does the PMHNP select that may be effective for managing this patient’s pain?

A. Methylphenidate (Ritalin) B. Viloxazine (Vivalan) C. Imipramine (Tofranil) D. Bupropion (Wellbutrin 

QUESTION 30 

The PMHNP is attempting to treat a patient’s chronic pain by having the agent bind the open channel conformation of VSCCs to block those channels with a “use-dependent” form of inhibition. Which agent will the PMHNP most likely select? 

A. Pregabalin (Lyrica) B. Duloxetine (Cymbalta) C. Modafinil (Provigil) D. Atomoxetine (Strattera) 

QUESTION 31 

A patient with irritable bowel syndrome reports chronic stomach pain. The PMHNP wants to prescribe the patient an agent that will cause irrelevant nociceptive inputs from the pain to be ignored and no longer perceived as painful. Which drug will the PMHNP prescribe? 

A. Pregabalin (Lyrica) B. Gabapentin (Neurontin) C. Duloxetine (Cymbalta) D. B and C 

QUESTION 32 

The PMHNP wants to use a symptom-based approach to treating a patient with fibromyalgia. How does the PMHNP go about treating this patient? 

A. Prescribing the patient an agent that ignores the painful symptoms by initiating a reaction known as “fibro-fog” B. Targeting the patient’s symptoms with anticonvulsants that inhibit gray matter loss in the dorsolateral prefrontal cortex C. Matching the patient’s symptoms with the malfunctioning brain circuits and neurotransmitters that might mediate those symptoms D. None of the above 

QUESTION 33 

The PMHNP is working with the student to care for a patient with diabetic peripheral neuropathic pain. The student asks the PMHNP why SSRIs are not consistently useful in treating this particular patient’s pain. What is the best response by the PMHNP? 

A. “SSRIs only increase norepinephrine levels.” B. “SSRIs only increase serotonin levels.” C. “SSRIs increase serotonin and norepinephrine levels.” D. “SSRIs do not increase serotonin or norepinephrine levels.” 

QUESTION 34 

A patient with gambling disorder and no other psychiatric comorbidities is being treated with pharmacological agents. Which drug is the PMHNP most likely to prescribe? 

A. Antipsychotics B. Lithium C. SSRI D. Naltrexone 

QUESTION 35 

Kevin is an adolescent who has been diagnosed with kleptomania. His parents are interested in seeking pharmacological treatment. What does the PMHNP tell the parents regarding his treatment options? 

A. “Naltrexone may be an appropriate option to discuss.” B. “There are many medicine options that treat kleptomania.” C. “Kevin may need to be prescribed antipsychotics to treat this illness.” D. “Lithium has proven effective for treating kleptomania.” 

QUESTION 36 

Which statement best describes a pharmacological approach to treating patients for impulsive aggression? 

A. Anticonvulsant mood stabilizers can eradicate limbic irritability. B. Atypical antipsychotics can increase subcortical dopaminergic stimulation. C. Stimulants can be used to decrease frontal inhibition. D. Opioid antagonists can be used to reduce drive. 

QUESTION 37 

A patient with hypersexual disorder is being assessed for possible pharmacologic treatment. Why does the PMHNP prescribe an antiandrogen for this patient? 

A. It will prevent feelings of euphoria. B. It will amplify impulse control. C. It will block testosterone. D. It will redirect the patient to think about other things. 

QUESTION 38 

Mrs. Kenner is concerned that her teenage daughter spends too much time on the Internet. She inquires about possible treatments for her daughter’s addiction. Which response by the PMHNP demonstrates understanding of pharmacologic approaches for compulsive disorders? 

A. “Compulsive Internet use can be treated similarly to how we treat people with substance use disorders.” B. “Internet addiction is treated with drugs that help block the tension/arousal state your daughter experiences.” C. “When it comes to Internet addiction, we prefer to treat patients with pharmaceuticals rather than psychosocial methods.” D. “There are no evidence-based treatments for Internet addiction, but there are behavioral therapies your daughter can try.” 

QUESTION 39 

Mr. Peterson is meeting with the PMHNP to discuss healthier dietary habits. With a BMI of 33, Mr. Peterson is obese and needs to modify his food intake. “Sometimes I think I’m addicted to food the way some people are addicted to drugs,” he says. Which statement best describes the neurobiological parallels between food and drug addiction? 

A. There is decreased activation of the prefrontal cortex. B. There is increased sensation of the reactive reward system. C. There is reduced activation of regions that process palatability. D. There are amplified reward circuits that activate upon consumption. 

QUESTION 40 

The PMHNP is caring for a patient who reports excessive arousal at nighttime. What could the PMHNP use for a time-limited duration to shift the patient’s brain from a hyperactive state to a sleep state? 

A. Histamine 2 receptor antagonist B. Benzodiazepines C. Stimulants D. Caffeine 

QUESTION 41 

The PMHNP is caring for a patient who experiences too much overstimulation and anxiety during daytime hours. The patient agrees to a pharmacological treatment but states, “I don’t want to feel sedated or drowsy from the medicine.” Which decision made by the PMHNP demonstrates proper knowledge of this patient’s symptoms and appropriate treatment options? 

A. Avoiding prescribing the patient a drug that blocks H1 receptors B. Prescribing the patient a drug that acts on H2 receptors C. Stopping the patient from taking medicine that unblocks H1 receptors D.None of the above 

QUESTION 42 

The PMHNP is performing a quality assurance peer review of the chart of another PMHNP. Upon review, the PMHNP reviews the chart of an older adult patient in long-term care facility who has chronic insomnia. The chart indicates that the patient has been receiving hypnotics on a nightly basis. What does the PMHNP find problematic about this documentation? 

A. Older adult patients are contraindicated to take hypnotics. B. Hypnotics have prolonged half-lives that can cause drug accumulation in the elderly. C. Hypnotics have short half-lives that render themselves ineffective for older adults. D. Hypnotics are not effective for “symptomatically masking” chronic insomnia in the elderly. 

QUESTION 43 

The PMHNP is caring for a patient with chronic insomnia who is worried about pharmacological treatment because the patient does not want to experience dependence. Which pharmacological treatment approach will the PMHNP likely select for this patient for a limited duration, while searching and correcting the underlying pathology associated with the insomnia? 

A. Serotonergic hypnotics B. Antihistamines C. Benzodiazepine hypnotics D. Non-benzodiazepine hypnotics 

QUESTION 44 

The PMHNP is caring for a patient with chronic insomnia who would benefit from taking hypnotics. The PMHNP wants to prescribe the patient a drug with an ultra-short half-life (1–3 hours). Which drug will the PMHNP prescribe? 

A. Flurazepam (Dalmane) B. Estazolam (ProSom) C. Triazolam (Halcion) D. Zolpidem CR (Ambien) 

QUESTION 45 

The PMHNP is attempting to treat a patient’s chronic insomnia and wishes to start with an initial prescription that has a half-life of approximately 1–2 hours. What is the most appropriate prescription for the PMHNP to make? 

A. Triazolam (Halcion) B. Quazepam (Doral) C. Temazepam (Restoril) D. Flurazepam (Dalmane) 

QUESTION 46 

A patient with chronic insomnia asks the PMHNP if they can first try an over-the-counter (OTC) medication before one that needs to be prescribed to help the patient sleep. Which is the best response by the PMHNP? 

A. “There are no over-the-counter medications that will help you sleep.” B. “You can choose from one of the five benzo hypnotics that are approved in the United States.” C. “You will need to ask the pharmacist for a non-benzodiazepine medicine.” D. “You can get melatonin over the counter, which will help with sleep onset.” 

QUESTION 47 

A patient with chronic insomnia and depression is taking trazodone (Oleptro) but complains of feeling drowsy during the day. What can the PMHNP do to reduce the drug’s daytime sedating effects? 

A. Prescribe the patient an antihistamine to reverse the sedating effects B. Increasing the patient’s dose and administer it first thing in the morning C. Give the medicine at night and lower the dose D. None of the above 

QUESTION 48 

The PMHNP is teaching a patient with a sleep disorder about taking diphenhydramine (Benadryl). The patient is concerned about the side effects of the drug. What can the PMHNP teach the patient about this treatment approach? 

A. “It can cause diarrhea.” B. “It can cause blurred vision.” C. “It can cause increased salivation.” D. “It can cause heightened cognitive effects.” 

QUESTION 49 

Parents of a 12-year-old boy want to consider attention deficit hyperactivity disorder (ADHD) medication for their son. Which medication would the PMHNP start? 

Methylphenidate Amphetamine salts Atomoxetine All of the above could potentially treat their son’s symptoms. 

QUESTION 50

An adult patient presents with a history of alcohol addiction and attention deficit hyperactivity disorder (ADHD). Given these comorbidities, the PMHNP determines which of the following medications may be the best treatment option? 

A. Methylphenidate (Ritalin, Concerta) B. Amphetamine C. Atomoxetine (Strattera) D. Fluoxetine (Prozac) 

QUESTION 51 

An 8-year-old patient presents with severe hyperactivity, described as “ants in his pants.” Based on self-report from the patient, his parents, and his teacher; attention deficit hyperactivity disorder (ADHD) is suspected. What medication is the PMNHP most likely to prescribe? 

A. Methylphenidate (Ritalin, Concerta) B. Clonidine (Catapres) C. Bupropion (Wellbutrin) D. Desipramine (Norpramin) 

QUESTION 52 

A 9-year-old female patient presents with symptoms of both attention deficit hyperactivity disorder (ADHD) and oppositional defiant disorder. In evaluating her symptoms, the PMHNP determines that which of the following medications may be beneficial in augmenting stimulant medication? 

A. Bupropion (Wellbutrin) B. Methylphenidate (Ritalin, Concerta) C. Guanfacine ER (Intuniv) D. Atomoxetine (Strattera) 

QUESTION 53 

A PMHNP supervisor is discussing with a nursing student how stimulants and noradrenergic agents assist with ADHD symptoms. What is the appropriate response? 

A. They both increase signal strength output dopamine (DA) and norepinephrine (NE). B. Dopamine (DA) and norepinephrine (NE) are increased in the prefrontal cortex. C. Noradrenergic agents correct reductions in dopamine (DA) in the reward pathway leading to increased ability to maintain attention to repetitive or boring tasks and resist distractions. D. All of the above. 

QUESTION 54 

A 43-year-old male patient is seeking clarification about treating attention deficit hyperactivity disorder (ADHD) in adults and how it differs from treating children, since his son is on medication to treat ADHD. The PMHNP conveys a major difference is which of the following? 

A. Stimulant prescription is more common in adults. B. Comorbid conditions are more common in children, impacting the use of stimulants in children. C. Atomoxetine (Strattera) use is not advised in children. D. Comorbidities are more common in adults, impacting the prescription of additional agents. 

QUESTION 55 

A 26-year-old female patient with nicotine dependence and a history of anxiety presents with symptoms of attention deficit hyperactivity disorder (ADHD). Based on the assessment, what does the PMHNP consider? 

A. ADHD is often not the focus of treatment in adults with comorbid conditions. B. ADHD should always be treated first when comorbid conditions exist. C. Nicotine has no reported impact on ADHD symptoms. D. Symptoms are often easy to treat with stimulants, given the lack of comorbidity with other conditions. 

QUESTION 56 

Which of the following is a true statement regarding the use of stimulants to treat attention deficit hyperactivity disorder (ADHD)? 

A. In adults with both ADHD and anxiety, treating the anxiety with selective serotonin reuptake inhibitors (SSRIs), serotonin-norepinephrine reuptake inhibitors (SNRIs), or benzodiazepines and the ADHD with stimulants is most effective in treating both conditions. B. Signal strength output is increased by dialing up the release of dopamine (DA) and norepinephrine (NE). C. In conditions where excessive DA activation is present, such as psychosis or mania, comorbid ADHD should never be treated with stimulants. D. High dose and pulsatile delivery of stimulants that are short acting are preferred to treat ADHD. 

QUESTION 57 

The PMHNP is providing a workshop for pediatric nurses, and a question is posed about noradrenergic agents to treat ADHD. Which of the following noradrenergic agents have norepinephrine reuptake inhibitor (NRI) properties that can treat ADHD? 

A. Desipramine (Norpramin) B. Methylphenidate (Ritalin, Concerta) C. Atomoxetine (Strattera) D. Both “A” & “C” E. “C” only 

QUESTION 58 

A 71-year-old male patient comes to an appointment with his 65-year-old wife. They are both having concerns related to her memory and ability to recognize faces. The PMNHP is considering prescribing memantine (Namenda) based on the following symptoms: 

A. Amnesia, aphasia, apnea B. Aphasia, apraxia, diplopia C. Amnesia, apraxia, agnosia D. Aphasia, agnosia, arthralgia 

QUESTION 59 

The PMHNP evaluates a patient presenting with symptoms of dementia. Before the PMHNP considers treatment options, the patient must be assessed for other possible causes of dementia. Which of the following answers addresses both possible other causes of dementia and a rational treatment option for Dementia? 

A. Possible other causes: hypothyroidism, Cushing’s syndrome, multiple sclerosis Possible treatment option: memantine B. Possible other causes: hypothyroidism, adrenal insufficiency, hyperparathyroidism Possible treatment option: donepezil C. Possible other causes: hypothyroidism, adrenal insufficiency, niacin deficiency Possible treatment option: risperidone D. Possible other causes: hypothyroidism, Cushing’s syndrome, lupus erythematosus Possible treatment option: donepezil 

QUESTION 60 

A group of nursing students seeks further clarification from the PMHNP on how cholinesterase inhibitors are beneficial for Alzheimer’s disease patients. What is the appropriate response? 

A. Acetylcholine (ACh) destruction is inhibited by blocking the enzyme acetylcholinesterase. B. Effectiveness of these agents occurs in all stages of Alzheimer’s disease. C. By increasing acetylcholine, the decline in some patients may be less rapid. D. Both “A” & “C.” 

QUESTION 61 

The PMHNP is assessing a patient who presents with elevated levels of brain amyloid as noted by positron emission tomography (PET). What other factors will the PMHNP consider before prescribing medication for this patient, and what medication would the PMHNP want to avoid given these other factors? 

A. ApoE4 genotype and avoid antihistamines if possible B. Type 2 diabetes and avoid olanzapine C. Anxiety and avoid methylphenidate D. Both “A” & “B” 

QUESTION 62 

A 72-year-old male patient is in the early stages of Alzheimer’s disease. The PMHNP determines that improving memory is a key consideration in selecting a medication. Which of the following would be an appropriate choice? 

A. Rivastigmine (Exelon) B. Donepezil (Aricept) C. Galantamine (Razadyne) D. All of the above 

QUESTION 63 

A 63-year-old patient presents with the following symptoms. The PMHNP determines which set of symptoms warrant prescribing a medication? Select the answer that is matched with an appropriate treatment. 

A. Reduced ability to remember names is most problematic, and an appropriate treatment option is memantine. B. Impairment in the ability to learn and retain new information is most problematic, and an appropriate treatment option would be donepezil. C. Reduced ability to find the correct word is most problematic, and an appropriate treatment option would be memantine. D. Reduced ability to remember where objects are most problematic, and an appropriate treatment option would be donepezil. 

QUESTION 64 

A 75-year-old male patient diagnosed with Alzheimer’s disease presents with agitation and aggressive behavior. The PMHNP determines which of the following to be the best treatment option? 

A. Immunotherapy B. Donepezil (Aricept) C. Haloperidol (Haldol) D. Citalopram (Celexa) or Escitalopram (Lexapro) 

QUESTION 65 

The PMHNP has been asked to provide an in-service training to include attention to the use of antipsychotics to treat Alzheimer’s. What does the PMHNP convey to staff? 

A. The use of antipsychotics may cause increased cardiovascular events and mortality. B. A good option in treating agitation and psychosis in Alzheimer’s patients is haloperidol (Haldol). C. Antipsychotics are often used as “chemical straightjackets” to over-tranquilize patients. D. Both “A” & “C.” 

QUESTION 66 

An 80-year-old female patient diagnosed with Stage II Alzheimer’s has a history of irritable bowel syndrome. Which cholinergic drug may be the best choice for treatment given the patient’s gastrointestinal problems? 

A. Donepezil (Aricept) B. Rivastigmine (Exelon) C. Memantine (Namenda) D. All of the above 

QUESTION 67 

The PMHNP understands that bupropion (Wellbutrin) is an effective way to assist patients with smoking cessation. Why is this medication effective for these patients? 

A. Bupropion (Wellbutrin) releases the dopamine that the patient would normally receive through smoking. B. Bupropion (Wellbutrin) assists patients with their cravings by changing the way that tobacco tastes. C. Bupropion (Wellbutrin) blocks dopamine reuptake, enabling more availability of dopamine. D. Bupropion (Wellbutrin) works on the mesolimbic neurons to increase the availability of dopamine. 

QUESTION 68 

Naltrexone (Revia), an opioid antagonist, is a medication that is used for which of the following conditions? 

A. Alcoholism B. Chronic pain C. Abuse of inhalants D. Mild to moderate heroin withdrawal 

QUESTION 69 

A patient addicted to heroin is receiving treatment for detoxification. He begins to experience tachycardia, tremors, and diaphoresis. What medication will the PMHNP prescribe for this patient? 

A. Phenobarbital (Luminal) B. Methadone (Dolophine) C. Naloxone (Narcan) D. Clonidine (Catapres) 

QUESTION 70 

A patient diagnosed with obsessive compulsive disorder has been taking a high-dose SSRI and is participating in therapy twice a week. He reports an inability to carry out responsibilities due to consistent interferences of his obsessions and compulsions. The PMHNP knows that the next step would be which of the following? 

A. Decrease his SSRI and add buspirone (Buspar). B. Decrease his SSRI and add an MAOI. C. Decrease his SSRI steadily until it can be discontinued then try an antipsychotic to manage his symptoms. D. Keep his SSRI dosage the same and add a low-dose TCA. 

QUESTION 71 

The PMHNP is assessing a patient who will be receiving phentermine (Adipex-P)/topiramate (Topamax) (Qsymia). Which of the following conditions/diseases will require further evaluation before this medication can be prescribed

 
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UMUC Biology 102/103 Lab 5: Meiosis

This contains 100% correct material for UMUC Biology 103 LAB05. However, this is an Answer Key, which means, you should put it in your own words. Here is a sample for the Pre lab questions answered:

Pre-Lab Questions

 

 

 

1. What major events occur during interphase?

 

The cell functions at its job, and prepares for mitosis by collecting resources and duplicating organelles (G1) and genetic content (S), then creating proteins needed for nuclear division (G2).

 

 

 

2. A person, residing in a location where they are exposed to the sun often, develops a mutation in some of their skin cells resulting in cancer. Consider whether their offspring will be born with the same mutation. Use scientific evidence to support your answer.

 

 

 

It would be highly unlikely that the person’s offspring will be born with same skin cancer mutation because the mutation occurred in the person’s skin cells. Skin cells are somatic cells (body cells) and are not involved in meiosis or reproduction. For the mutation to be passed on to the offspring, a sex cell (sperm or egg) would have to carry the mutation.

 

The other questions that will be answered:

 

Experiment 1: Following Chromosomal DNA Movement through Meiosis

 

Data Tables and Post-Lab Assessment

 

Trial 1 – Meiotic Division Beads Diagram:

 

Prophase I

 

Metaphase I

 

Anaphase I

 

Telophase I

 

Prophase II

 

Metaphase II

 

Anaphase II

 

Telophase I

 

Cytokinesis

 

Trial 2 – Meiotic Division Beads Diagram:

 

Prophase I

 

Metaphase I

 

Anaphase I

 

Telophase I

 

Prophase II

 

Metaphase II

 

Anaphase II

 

Telophase I

 

Cytokinesis

 

 

 

Post-Lab Questions

 

1.    What is the ploidy of the DNA at the end of meiosis I? What about at the end of meiosis II

2.    How are meiosis I and meiosis II different?

3.    Why do you use non-sister chromatids to demonstrate crossing over?

 

4.    What combinations of alleles could result from a crossover between BD and bd chromosomes?

 

 5.    How many chromosomes were present when meiosis I started?

 

 6.    How many nuclei are present at the end of meiosis II? How many chromosomes are in each?

 

 7.    Identify two ways that meiosis contributes to genetic recombination.

 

8.    Why is it necessary to reduce the number of chromosomes in gametes, but not in other cells?

 

 9.    Blue whales have 44 chromosomes in every cell. Determine how many chromosomes you would expect to find in the following:

 

 

 

                                  i.    Sperm Cell:

 

 

                                 ii.    Egg Cell:

 

 

 

                                iii.    Daughter Cell from Mitosis:

 

 

 

                               iv.    Daughter Cell from Meiosis II:

 

 

 

10.  Research and find a disease that is caused by chromosomal mutations. When does the mutation occur? What chromosomes are affected? What are the consequences?

 

 

 

 

 

 

 

11.  Diagram what would happen if sexual reproduction took place for four generations using diploid (2n) cells.

 

 

Experiment 2: The Importance of Cell Cycle Control

 

Data Tables and Post-Lab Assessment

 

1.   

 

 

 

 

 

2.   

 

 

 

 

 

3.   

 

 

 

 

 

4.   

 

 

 

 

 

5.   

 

 

 

 

 

Post-Lab Questions

 

1.    Record your hypothesis from Step 1 in the Procedure section here.

 

 

 

 

 

 

 

2.    What do your results indicate about cell cycle control?

 

 

 

 

 

 

 

3.    Suppose a person developed a mutation in a somatic cell which diminishes the performance of the body’s natural cell cycle control proteins. This mutation resulted in cancer, but was effectively treated with a cocktail of cancer-fighting techniques. Is it possible for this person’s future children to inherit this cancer-causing mutation? Be specific when you explain why or why not.

 

 

 

 

 

 

 

4.    Why do cells which lack cell cycle control exhibit karyotypes which look physically different than cells with normal cell cycle.

 

 

 

 

 

 

 

5.    What are HeLa cells? Why are HeLa cells appropriate for this experiment?

 

 

 

 

 

 

 
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biology

only for Tutor Lynn G

 
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UMUC Biology 102 / 103 Lab 3: Cell Structure and Function ANSWER KEY

This contains 100% correct material for UMUC Biology 103 LAB03. However, this is an Answer Key, which means, you should put it in your own words. Here is a sample for the Pre lab questions answered:

Pre-Lab Questions

1. Identify the major similarities and differences between prokaryotic and eukaryotic cells. (2 pts)

Prokaryotes tend to be less complex than eukaryotic cells, with fewer organelles and (generally) fewer requirements for survival. Eukaryotes have a nucleus, while prokaryotes do not. Both eukaryotes and prokaryotes have DNA, a cell membrane, and cytoplasm.

 

2. Where is the DNA housed in a prokaryotic cell? Where is it housed in a eukaryotic cell? (2 pts)

DNA is housed in the nucleus in eukaryotic cells. Prokaryotic cells do not have a nucleus, and thus DNA exists freely in the cytoplasm.

 

3. Identify three structures which provide support and protection in a eukaryotic cell. (2 pts)

The cell membrane, the cytoplasm, and the cytoskeleton (microtubules, microfilaments, etc.).

 

The rest of the questions are answered as well:

   

Experiment 1: Cell Structure and Function

Post-Lab Questions

1.    Label each of the arrows in the following slide image:

 

 

2.    What is the difference between the rough and smooth endoplasmic reticulum?

 

 

 

3.    Would an animal cell be able to survive without a mitochondria? Why or why not?

 

 

 

4.    What could you determine about a specimen if you observed a slide image showing the specimen with a cell wall, but no nucleus or mitochondria?

 

 

 

5.    Hypothesize why parts of a plant, such as the leaves, are green, but other parts, such as the roots, are not. Use scientific reasoning to support your hypothesis.

 

 

 

 

 

Experiment 2: Osmosis – Direction and Concentration Gradients

Data Tables and Post-Lab Assessment

Table 3: Sucrose Concentration vs. Tubing Permeability

Band Color

Sucrose %

Initial Volume (mL)

Final Volume (mL)

Net Displacement (mL)

Yellow

 

 

 

 

Red

 

 

 

 

Blue

 

 

 

 

Green

 

 

 

 

 

Hypothesis:

 

 

 

 

Post-Lab Questions

1.    For each of the tubing pieces, identify whether the solution inside was hypotonic, hypertonic, or isotonic in comparison to the beaker solution in which it was placed.

 

2.    Which tubing increased the most in volume? Explain why this happened.

 

 

 

 

3.    What do the results of this experiment this tell you about the relative tonicity between the contents of the tubing and the solution in the beaker?

 

 

 

4.    What would happen if the tubing with the yellow band was placed in a beaker of distilled water?

 

 

 

5.    How are excess salts that accumulate in cells transferred to the blood stream so they can be removed from the body? Be sure to explain how this process works in terms of tonicity.

 

 

 

6.    If you wanted water to flow out of a tubing piece filled with a 50% solution, what would the minimum concentration of the beaker solution need to be? Explain your answer using scientific evidence.

 

 

 

7.    How is this experiment similar to the way a cell membrane works in the body? How is it different? Be specific with your response.

 

 
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Capital Punishment

Assignment Instructions

To complete this assignment you will need to conduct additional research using scholarly journals only. You must utilize a minimum of (2) two scholarly references in the assignment. Scholarly resources are considered: peer-reviewed journal articles (i.e.: ProQuest), government websites, textbooks and criminal justice publications. Failure to provide appropriate references will result in a large point deduction.

You can access scholarly journals by clicking on the Library Link in the Course Introduction section.

In a 4-5 page (1500 word) essay you will address the following points:

  • Discuss the history of capital punishment.
  • What current methods are utilized for the death penalty (as of 2018)?
  • How many states removed capital punishment in the United States?
  • Provide a case study (example of a recent case) and discuss one case in which the defendant was given capital punishment (any case within the past ten years).
  • Do you agree? Why or why not?
 
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lab report

Experiment 2: Concentration Gradients and Membrane Permeability

In this experiment, you will dialyze a solution of glucose and starch to observe: The directional movement of glucose and starch. The effect of a selectively permeable membrane on the diffusion of these molecules.

An indicator is a substance that changes color when in the presence of a specific substance. In this experiment, IKI will be used as an indicator to test for the presence of starch.

 

Materials

(5) 100 mL Beakers
10 mL 1% Glucose Solution, C6H12O6
4 Glucose Test Strips
(1) 100 mL Graduated Cylinder
4 mL 1% Iodine-Potassium Iodide, IKI
5 mL Liquid Starch, C6H10O5
3 Pipettes
4 Rubber Bands (Small; contain latex, handle with gloves on if allergic)  

 

Permanent Marker
* Stopwatch
* Water
* Scissors

*15.0 cm Dialysis Tubing

*You Must Provide
*Be sure to measure and cut only the length you need for this experiment. Reserve the remainder for later experiments.

 

 

 

  

  Attention!

Do not allow the open end of the dialysis tubing to fall into the beaker. If it does, remove the tube and rinse thoroughly with water before refilling it with the starch/glucose solution and replacing it in the beaker.

 Note:

If you make a mistake, the dialysis tubing can be rinsed and used again.

Dialysis tubing must be soaked in water before you will be able to open it up to create the dialysis “bag.” Follow these directions for this experiment:

1.      Soak the tubing in a beaker of water for ten minutes.

2.     Place the dialysis tubing between your thumb and forefinger, and rub the two digits together in a shearing manner. This motion should open up the “tube” so that you can fill it with the different solutions.

 

Procedure

1.     Measure and pour 50 mL of water into a 100 mL beaker using the 100 mL graduated cylinder. Cut a piece of dialysis tubing 15.0 cm long. Submerge the dialysis tubing in the water for at least ten minutes.

 

2.     Measure and pour 82 mL of water into a second 100 mL beaker using the 100 mL graduated cylinder. This is the beaker you will put the filled dialysis bag into in Step 9.

3.     Make the glucose/sucrose mixture. Use a graduated pipette to add 5 mL of glucose solution to a third 100 mL beaker and label it “dialysis bag solution.” Use a different graduated pipette to add 5 mL of starch solution to the same beaker. Mix by pipetting the solution up and down six times.

4.     Using the same pipette that you used to mix the dialysis bag solution, remove 2 mL of the dialysis bag solution and place it in a clean beaker. This sample will serve as your positive control for glucose and starch. 

a.     Dip one of the glucose test strips into the 2 mL of glucose/starch solution in the third beaker. After one minute has passed, record the final color of the glucose test strip in Table 3. This is your positive control for glucose.

b.     Use a pipette to transfer approximately 0.5 mL of IKI into the 2 mL of glucose/starch solution into the third beaker. After one minute has passed, record the final color of the glucose/starch solution in the beaker in Table 3. This is your positive control for starch.

5.     Using a clean pipette, remove 2 mL of water from the 82 mL of water you placed in a beaker in Step 2, and place it in a clean beaker. This sample will serve as your negative controls for glucose and starch.

a.     Dip one of the glucose test strips into the 2 mL of water in the beaker. After one minute has passed, record the final color of the glucose test strip in Table 3. This is your negative control for glucose.

b.     Use a pipette to transfer approximately 0.5 mL of IKI into the 2 mL in the beaker. After one minute has passed, record the final color of the water in the beaker      in Table 3. This is your negative control for starch.

Note : The color results of these controls determine the indicator reagent key. You must use these results to interpret the rest of your results.

6.     After at least ten minutes have passed, remove the dialysis tube and close one end by folding over 3.0 cm of one end (bottom). Fold it again and secure with a rubber band (use two rubber bands if necessary).

7.     Test to make sure the closed end of the dialysis tube will not allow solution to leak out. Dry off the outside of the dialysis tube bag with a cloth or paper towel. Then, add a small amount of water to the bag and examine the rubber band seal for leakage. Be sure to remove the water from the inside of the bag before continuing. Using the same pipette that was used to mix the solution in Step 3, transfer 8 mL of the dialysis bag solution to the prepared dialysis bag.

Figure 4: Step 9 reference.

9.     Place the filled dialysis bag in the 100 mL beaker filled with 80 mL of water, leaving the open end draped over the edge of the beaker as shown in Figure 4.

10. Allow the solution to sit for 60 minutes. Clean and dry all materials except the beaker holding the dialysis bag.

11. After the solution has diffused for 60 minutes, remove the dialysis bag from the beaker and empty the contents of the bag into a clean, dry beaker. Label the beaker “final dialysis bag solution.” 

12. Test the final dialysis bag solution for the presence of glucose by dipping one glucose test strip into the dialysis bag. Wait one minute before reading the results of the test strip. Record your results for the presence of glucose in Table 4.

13. Test for the presence of starch by adding 2 mL IKI. After one minute has passed, record the final color in Table 4.

14. Use a pipette to transfer 8 mL of the water in the beaker to a clean beaker. Test the beaker water for the presence of glucose by dipping one glucose test strip into the beaker. Wait one minute before reading the results of the test strip, and record the results in Table 4.

15. Test for the presence of starch by adding 2 mL of IKI to the beaker water. Record the final color of the beaker solution in Table 4.

 

 

Table 3: Indicator Reagent Data

Indicator

Starch Positive
Control (Color)

Starch Negative
Control (Color)

Glucose Positive
Control (Color)

Glucose Negative
Control (Color)

Glucose Test Strip

n/a

n/a

 

 

IKI Solution

 

 

n/a

n/a

 

Table 4: Diffusion of Starch and Glucose Over Time

Indicator

Dialysis Bag After 60 Minutes

Beaker Water After 60 Minutes

IKI Solution

 

 

Glucose Test Strip

 

 

 

Post-Lab Questions

1.     Why is it necessary to have positive and negative controls in this experiment?

 

 

 

 

 

2.     Draw a diagram of the experimental set-up. Use arrows to depict the movement of each substance in the dialysis bag and the beaker.

 

 

 

 

3.     Which substance(s) crossed the dialysis membrane? Support your response with data-based evidence.

 

 

 

 

4.     Which molecules remained inside of the dialysis bag?

 

 

5.     Did all of the molecules diffuse out of the bag into the beaker? Why or why not?

 

 

 

 

 

Experiment 1: Diffusion through a Liquid

In this experiment, you will observe the effect that different molecular weights have on the ability of dye to travel through a viscous medium. Materials

1 60 mL Corn Syrup Bottle, C12H22O11
Red and Blue Dye Solutions (Blue molecular weight = 793 g/mole; red molecular weight = 496 g/mole)
(1) 9 cm Petri Dish (top and bottom halves)  

Ruler
* Stopwatch
* Clear Tape

*You Must Provide   

 

Procedure

1.     Use clear tape to secure one-half of the petri dish (either the bottom or the top half) over a ruler. Make sure that you can read the measurement markings on the ruler through the petri dish. The dish should be positioned with the open end of the dish facing upwards.

Carefully fill the half of the petri dish with corn syrup until the entire surface is covered. Develop a hypothesis regarding which color dye you believe will diffuse faster across the corn syrup and why. Record this in the post-lab questions. Place a single drop of blue dye in the middle of the corn syrup. Note the position where the dye fell by reading the location of its outside edge on the ruler. Record the location of the outside edge of the dye (the distance it has traveled) every ten seconds for a total of two minutes. Record your data in Table 1 and use your results to perform the calculations in Table 2. Repeat the procedure using the red dye, the unused half of the petri dish, and fresh corn syrup.

 

Table 1: Rate of Diffusion in Corn Syrup

Time (sec)

Blue Dye

Red Dye

Time (sec)

Blue Dye

Red Dye

10

 

 

70

 

 

20

 

 

80

 

 

30

 

 

90

 

 

40

 

 

100

 

 

50

 

 

110

 

 

60

 

 

120

 

 

 

 

 

 

 

 

 

Table 2: Speed of Diffusion of Different Molecular Weight Dyes

Structure

Molecular Weight

Total Distance
Traveled (mm)

Speed of Diffusion
(mm/hr)*

Blue Dye

 

 

 

Red Dye

 

 

 

*Multiply the total distance diffused by 30 to get the hourly diffusion rate

 

Post-Lab Questions Record your hypothesis from Step 3 here. Be sure to validate your predictions with scientific reasoning.

 

 

  Which dye diffused the fastest?

 

 

  Does the rate of diffusion correspond with the molecular weight of the dye?

 

 

 

 

  Does the rate of diffusion change over time? Why or why not?

 

 

 

  Examine the graph below. Does it match the data you recorded in Table 2? Explain why, or why not. Submit your own plot if necessary.

 

https://nuonline.neu.edu/bbcswebdav/pid-9451339-dt-content-rid-14232100_1/courses/BIO1101.90155.201714/BIO1101.90155.201714_ImportedContent_20160930044714/CourseRoot/html/lab006s001.html

 

 

https://nuonline.neu.edu/bbcswebdav/pid-9451340-dt-content-rid-14232401_1/courses/BIO1101.90155.201714/BIO1101.90155.201714_ImportedContent_20160930044714/CourseRoot/html/lab006s002.html

 

https://nuonline.neu.edu/bbcswebdav/pid-9451341-dt-content-rid-14232402_1/courses/BIO1101.90155.201714/BIO1101.90155.201714_ImportedContent_20160930044714/CourseRoot/html/lab006s003.html

 

 

   

 

 

 

 
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case study

  

CASE STUDY ASSIGNMENT: 

INSTRUCTION. PLEASE SEE ATTACHMENT  ARTICLE FOR ALL 12 CASE STUDY.

THERE ARE TOTAL OF 12 CASE STUDY:

1) PLEASE DO ALL CASE STUDY SEPARABLY

2) AS YOU READY THE CASE STUDY THERE ARE QUESTIONS WITH IN THE CASE STUDY THAT NEED TO BE ANSWER

3) PLEASE TYPE THE QUESTIONS WITH IN EACH CASE STUDY AND ANSWER IT, AGAIN TYPE NO HAND WRITING.

MY PRICE ON THIS ASSIGNMENT IS FRAME.

 
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Lab 4: Enzymes

Download 100% plgrism free answer from here

 

 
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