Chemistry ยท Biology

Pharmacology and Therapeutics

1,643 Questions

Engage with critical pharmacology and therapeutics questions covering drug classifications and therapeutic mechanisms. Topics include chemical absorption, medication formulations, and pharmacogenomics. This collection is useful for students preparing for medical entrance, nursing, and science competitive examinations.

Chemical absorption routesDrug formulation typesMedication mechanismsEnzyme inhibitorsPharmacogenomic tests

Pharmacology and Therapeutics Questions

Multiple choice

What is the purpose of antihistamines in managing skin allergies?

  1. Relieving itching

  2. Reducing inflammation

  3. Clearing up rashes

  4. Preventing allergic reactions
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Antihistamines are commonly used to relieve itching associated with skin allergies.

Multiple choice

Which of the following is NOT a route of drug administration?

  1. Oral

  2. Intravenous

  3. Inhalation

  4. Transdermal
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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

Multiple choice

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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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

Multiple choice

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

  1. Receptor binding

  2. Enzyme inhibition

  3. Ion channel modulation

  4. Genetic modification
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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

Multiple choice

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
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

Multiple choice

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

  1. Metabolism

  2. Excretion

  3. Distribution

  4. Absorption
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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

Multiple choice

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

  1. Metabolism

  2. Excretion

  3. Distribution

  4. Absorption
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

Multiple choice

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

  1. Age

  2. Gender

  3. Genetics

  4. Disease state
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice

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
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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

Multiple choice

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
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

Multiple choice

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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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

Multiple choice

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

  1. Synergism

  2. Antagonism

  3. Potentiation

  4. Metabolism
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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

Multiple choice

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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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

Multiple choice

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
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

Multiple choice

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

  1. Synergism

  2. Antagonism

  3. Potentiation

  4. Metabolism
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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