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5 Pharmacology Practice Questions and Explanations Online Quiz Questions

Use this free practice quiz with 20 questions to review 5 Pharmacology Practice Questions and Explanations, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

A medication binds to a receptor and activates it, producing a response. Which term best describes the medication's action?

  1. A

    Agonist

  2. B

    Antagonist

  3. C

    Metabolite

  4. D

    Excretory product

02
Choose one
1 point

After a person takes a medication by mouth, some of it is metabolized in the intestinal wall and liver before reaching general circulation. What is this called?

  1. A

    Renal clearance

  2. B

    First-pass effect

  3. C

    Tissue distribution

  4. D

    Receptor antagonism

03
Choose one
1 point

A drug circulates partly bound to albumin and partly unbound. Which statement best describes the bound portion?

  1. A

    The bound portion is generally less available to cross into tissues immediately than the unbound portion.

  2. B

    The bound portion has already been eliminated in the urine.

  3. C

    The bound portion can never become pharmacologically active.

  4. D

    The bound portion is necessarily absorbed more quickly from the intestine.

04
Choose one
1 point

A medication is mainly broken down by a particular CYP enzyme. A second medication inhibits that enzyme. What is a possible consequence for the first medication?

  1. A

    Its concentration or exposure may increase.

  2. B

    Its absorption must stop completely.

  3. C

    It will be converted into a receptor antagonist.

  4. D

    Its renal filtration must increase.

05
Choose all
1 point

Two people receive the same prescribed dose but respond differently. Select all factors that could contribute to the difference.

  1. A

    Age

  2. B

    The assumption that every person's dose was measured incorrectly

  3. C

    Kidney or liver function

  4. D

    Genetics

  5. E

    The idea that only absorption can account for differences

  6. F

    Interacting substances or whether doses are taken as prescribed

06
Choose all
1 point

A medication has a narrow therapeutic window. Select all statements that accurately describe the implication of this feature.

  1. A

    The effective and potentially harmful exposure ranges are relatively close.

  2. B

    The drug cannot produce a therapeutic effect.

  3. C

    Relatively small changes in dose or concentration can matter.

  4. D

    The drug is never metabolized or excreted.

07
True or false
1 point

A drug and its metabolites are primarily eliminated in urine. If kidney function declines, the drug may be eliminated more slowly and accumulate.

  1. A

    True

  2. B

    False

08
True or false
1 point

A medication can provide its intended benefit and also cause an unwanted effect even when it is used as directed.

  1. A

    True

  2. B

    False

09
Written response
1 point

A team is describing how a medication is absorbed, distributed, metabolized, and excreted in the body. What field are they describing?

10
Written response
1 point

A medication reduces a patient's pain as intended. What is this intended beneficial response called?

11
Fill in the blank
1 point

In ADME, the final process is .

12
Fill in the blank
1 point

An unwanted response to a medication that is harmful or clinically significant may be called an .

13
Open ended
1 point

Explain the difference between pharmacokinetics and pharmacodynamics. Include the four processes represented by ADME and one example of the kind of question each field addresses.

14
True or false
1 point

An antagonist can block or reduce activation of a receptor by an agonist. True or false?

  1. A

    True

  2. B

    False

15
Written response
1 point

A clinician reviews how a medication enters the body, moves into tissues, is chemically changed, and is removed. Enter the four processes considered, in their standard order.

16
Choose one
1 point

Which option defines a medication’s therapeutic effect?

  1. A

    An unwanted response to a medication

  2. B

    The intended beneficial response to a medication

  3. C

    The removal of a medication from the body

  4. D

    The breakdown of a medication by an enzyme

17
Choose one
1 point

What does it mean for a drug to have a narrow therapeutic window?

  1. A

    The drug cannot provide a therapeutic benefit

  2. B

    The drug is never metabolized or excreted

  3. C

    The effective and potentially harmful exposure ranges are relatively close

  4. D

    The dose has no relationship to the drug’s effects

18
Choose one
1 point

Which statement correctly distinguishes pharmacodynamics from pharmacokinetics?

  1. A

    Pharmacodynamics describes how a drug acts on the body, while pharmacokinetics describes how the body handles a drug through absorption, distribution, metabolism, and excretion.

  2. B

    Pharmacodynamics describes absorption, distribution, metabolism, and excretion, while pharmacokinetics describes how a drug acts on the body.

  3. C

    Both terms describe how a drug activates or blocks receptors.

  4. D

    Pharmacokinetics describes only a drug’s intended therapeutic effect, while pharmacodynamics describes its elimination.

19
Choose one
1 point

Two people receive the same prescribed dose but have different responses. Which explanation is most complete?

  1. A

    Only differences in absorption can explain different responses.

  2. B

    Age, organ function, genetics, interacting substances, and adherence can contribute to different responses.

  3. C

    A person’s genes are the only relevant factor.

  4. D

    The same prescribed dose must produce the same response in everyone.

20
Written response
1 point

What is the pharmacology field that describes how a drug acts on the body?