BCPS Clinical Pharmacokinetics & Pharmacodynamics

Question 1

What does 'half-life' of a drug refer to?

Accepted Answer

Time for 50% of the drug concentration to be reduced

Answer

Time it takes for a drug to reach peak concentration.

Answer

Time it takes for a drug to be completely eliminated.

Answer

Time for 50% of the drug to be metabolized.

Question 2

What is the primary site of drug metabolism in the human body?

Accepted Answer

Liver

Answer

Kidneys

Answer

Lungs

Answer

Stomach

Question 3

Which pharmacokinetic parameter reflects the extent of drug absorption?

Accepted Answer

Bioavailability

Answer

Half-life

Answer

Volume of distribution

Answer

Clearance

Question 4

What is the volume of distribution (Vd)?

Accepted Answer

Theoretical volume relating drug amount to plasma concentration

Answer

The amount of drug absorbed.

Answer

The amount of drug excreted.

Answer

The total fluid volume in the body.

Question 5

Which factor does NOT affect drug clearance?

Accepted Answer

Patient intelligence

Answer

Liver function

Answer

Kidney function

Answer

Enzyme activity

Question 6

What does a high therapeutic index indicate?

Accepted Answer

The drug is relatively safe

Answer

The drug is highly toxic.

Answer

The drug has a narrow safety margin.

Answer

The drug is ineffective.

Question 7

What pharmacodynamic term describes the maximum effect a drug can produce?

Accepted Answer

Efficacy

Answer

Potency

Answer

Toxicity

Answer

Affinity

Question 8

Which route of administration provides 100% bioavailability?

Accepted Answer

Intravenous

Answer

Oral

Answer

Intramuscular

Answer

Subcutaneous

Question 9

What is the primary goal of pharmacodynamics?

Accepted Answer

Study of drug effects and mechanisms

Answer

Study of drug metabolism.

Answer

Study of drug movement through the body.

Answer

Study of drug absorption only.