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Pharmacology and Drug Action

Description: This quiz covers the fundamental concepts of pharmacology and drug action, including drug classifications, mechanisms of action, pharmacokinetics, and pharmacodynamics.
Number of Questions: 15
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Tags: pharmacology drug action pharmacokinetics pharmacodynamics
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Which of the following is NOT a route of drug administration?

  1. Oral

  2. Intravenous

  3. Inhalation

  4. Transdermal


Correct Option: D
Explanation:

Transdermal is not a route of drug administration, as it refers to the absorption of drugs through the skin.

The process by which a drug moves from its site of administration to its site of action is known as:

  1. Pharmacokinetics

  2. Pharmacodynamics

  3. Metabolism

  4. Excretion


Correct Option: A
Explanation:

Pharmacokinetics is the study of the movement of drugs in the body, including absorption, distribution, metabolism, and excretion.

The branch of pharmacology that deals with the study of drug effects on living organisms is called:

  1. Pharmacokinetics

  2. Pharmacodynamics

  3. Toxicology

  4. Clinical Pharmacology


Correct Option: B
Explanation:

Pharmacodynamics is the study of the biochemical and physiological effects of drugs on living organisms.

Which of the following is NOT a mechanism of drug action?

  1. Receptor binding

  2. Enzyme inhibition

  3. Ion channel modulation

  4. Genetic modification


Correct Option: D
Explanation:

Genetic modification is not a mechanism of drug action, as it involves altering the genetic makeup of an organism.

The time it takes for a drug to reach its peak concentration in the blood is known as:

  1. Onset of action

  2. Time to peak concentration

  3. Half-life

  4. Duration of action


Correct Option: B
Explanation:

Time to peak concentration is the time it takes for a drug to reach its highest concentration in the blood after administration.

The process by which a drug is broken down in the body is called:

  1. Metabolism

  2. Excretion

  3. Distribution

  4. Absorption


Correct Option: A
Explanation:

Metabolism is the process by which a drug is broken down into smaller molecules, usually by enzymes in the liver.

The process by which a drug is eliminated from the body is called:

  1. Metabolism

  2. Excretion

  3. Distribution

  4. Absorption


Correct Option: B
Explanation:

Excretion is the process by which a drug is eliminated from the body, usually through the kidneys or liver.

Which of the following is NOT a factor that can affect drug metabolism?

  1. Age

  2. Gender

  3. Genetics

  4. Disease state


Correct Option: D
Explanation:

Disease state is not a factor that can affect drug metabolism, as it is the process by which a drug is broken down in the body.

The dose of a drug that produces a desired therapeutic effect is known as:

  1. Minimum effective dose

  2. Maximum tolerated dose

  3. Therapeutic dose

  4. Median effective dose


Correct Option: C
Explanation:

Therapeutic dose is the dose of a drug that produces a desired therapeutic effect without causing unacceptable side effects.

The dose of a drug that produces toxic effects is known as:

  1. Minimum effective dose

  2. Maximum tolerated dose

  3. Therapeutic dose

  4. Median effective dose


Correct Option: B
Explanation:

Maximum tolerated dose is the highest dose of a drug that can be administered without causing unacceptable side effects.

The difference between the therapeutic dose and the toxic dose of a drug is known as:

  1. Therapeutic index

  2. Safety margin

  3. Efficacy

  4. Potency


Correct Option: A
Explanation:

Therapeutic index is the ratio of the toxic dose to the therapeutic dose of a drug.

Which of the following is NOT a type of drug interaction?

  1. Synergism

  2. Antagonism

  3. Potentiation

  4. Metabolism


Correct Option: D
Explanation:

Metabolism is not a type of drug interaction, as it is the process by which a drug is broken down in the body.

When two drugs produce a combined effect that is greater than the sum of their individual effects, it is known as:

  1. Synergism

  2. Antagonism

  3. Potentiation

  4. Metabolism


Correct Option: A
Explanation:

Synergism is when two drugs produce a combined effect that is greater than the sum of their individual effects.

When two drugs produce a combined effect that is less than the sum of their individual effects, it is known as:

  1. Synergism

  2. Antagonism

  3. Potentiation

  4. Metabolism


Correct Option: B
Explanation:

Antagonism is when two drugs produce a combined effect that is less than the sum of their individual effects.

When one drug increases the effect of another drug, it is known as:

  1. Synergism

  2. Antagonism

  3. Potentiation

  4. Metabolism


Correct Option: C
Explanation:

Potentiation is when one drug increases the effect of another drug.

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