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Pharmacology Quiz

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Biotransformation means:

a)

Drug elimination by kidney

b)

Conversion of drug to active/inactive metabolites

c)

Drug distribution

d)

Protein binding

2.

Primary site of drug metabolism:

a)

Kidney

b)

Liver

c)

Skin

d)

Lungs

3.

Phase 1 reactions mainly involve:

a)

Conjugation

b)

Oxidation–reduction–hydrolysis

c)

Glucuronidation

d)

Sulfation

4.

Most common Phase 1 enzyme system:

a)

MAO

b)

CYP450

c)

Cyclooxygenase

d)

Tyrosine kinase

5.

Phase 2 reactions involve:

a)

Hydrolysis only

b)

Conjugation reactions

c)

Oxidation only

d)

Deamination

6.

Example of Phase 2 reaction:

a)

Oxidation

b)

Glucuronidation

c)

Hydrolysis

d)

O-dealkylation

7.

Prodrug is:

a)

Inactive compound converted to active form in body

b)

Active drug with long half-life

c)

Only topical drug

d)

Non-metabolized drug

8.

Example of a prodrug:

a)

Morphine

b)

L-Dopa

c)

Lidocaine

d)

Aspirin

9.

Purpose of prodrug:

a)

Increase toxicity

b)

Improve pharmacokinetics & absorption

c)

Block receptors

d)

Increase protein binding

10.

CYP450 induction leads to:

a)

Reduced metabolism

b)

Increased metabolism

c)

No change in metabolism

d)

Immediate toxicity

11.

Enzyme induction effect on other drugs:

a)

Increases their half-life

b)

Decreases their action

c)

Prevents clearance

d)

Has no effect

12.

Typical enzyme inducer:

a)

Erythromycin

b)

Rifampicin

c)

Cimetidine

d)

Ketoconazole

13.

Typical enzyme inhibitor:

a)

Rifampicin

b)

Carbamazepine

c)

Cimetidine

d)

Phenobarbital

14.

Phase 1 reaction outcome:

a)

Usually makes drug more lipophilic

b)

Usually makes drug more polar

c)

Always inactivates drug

d)

Always activates drug

15.

Phase 2 conjugation increases:

a)

Lipid solubility

b)

Water solubility

c)

Protein binding

d)

Receptor affinity

16.

First-pass metabolism primarily affects:

a)

IV drugs

b)

Oral drugs

c)

Topical drugs

d)

Inhalational drugs

17.

Microsomal enzymes are located in:

a)

Mitochondria

b)

Nucleus

c)

Rough ER

d)

Smooth ER

18.

Enzyme induction may lead to:

a)

Drug toxicity

b)

Enhanced clearance of drugs

c)

Prolonged drug effect

d)

Reduced metabolism

19.

Drug most affected by microsomal enzyme induction:

a)

Warfarin

b)

Heparin

c)

Amoxicillin

d)

Insulin

20.

Phase 2 reaction requiring acetylation occurs with:

a)

Aspirin

b)

Isoniazid

c)

Morphine

d)

Digoxin