4. In a one-compartment open model, elimination follows which type of kinetics?
Anonymous Quiz
47%
A) First-order kinetics
31%
B) Zero-order kinetics
19%
C) Michaelis-Menten kinetics
3%
D) Non-linear kinetics
5. What is the primary route of drug elimination in the body?
Anonymous Quiz
5%
A) Lungs
78%
B) Kidneys
11%
C) Skin
6%
D) Saliva
6. Which of the following pharmacokinetic parameters represents the volume of distribution?
Anonymous Quiz
5%
A) Ke
83%
B) Vd
6%
C) Cl
5%
D) AUC
👍3
7. The elimination rate constant (Ke) is calculated using which equation?
Anonymous Quiz
45%
A) Ke = 0.693/t1/2
20%
B) Ke = AUC × Dose
30%
C) Ke = Cl × Vd
5%
D) Ke = Tmax × Cmax
👍3
8. The half-life (t1/2) of a drug is dependent on which of the following?
Anonymous Quiz
5%
A) Drug formulation
16%
B) Route of administration
77%
C) Clearance and volume of distribution
2%
D) Body temperature
👍2
9. Area Under the Curve (AUC) is used to measure:
Anonymous Quiz
37%
A) Rate of drug absorption
44%
B) Extent of drug absorption
15%
C) Drug clearance
3%
D) Drug excretion
10. Which of the following parameters is used to determine drug clearance (Cl)?
Anonymous Quiz
10%
A) Cl = Ke × AUC
50%
B) Cl = Vd × Ke
26%
C) Cl = AUC / Dose
14%
D) Cl = t1/2 × AUC
11. A drug with a high volume of distribution (Vd) is likely to:
Anonymous Quiz
10%
A) Stay in the bloodstream
73%
B) Distribute widely into tissues
10%
C) Be rapidly excreted
8%
D) Have a short half-life
👍2
12. What is the key characteristic of intravenous bolus administration?
Anonymous Quiz
10%
A) Slow release over time
51%
B) Immediate and complete absorption
35%
C) Metabolism before reaching systemic circulation
4%
D) Drug accumulation in fat tissues
13. Which factor influences the bioavailability of a drug?
Anonymous Quiz
11%
A) Metabolism in the liver
7%
B) Water solubility
5%
C) Drug particle size
76%
D) All of the above
14. Which pharmacokinetic model considers actual physiological processes?
Anonymous Quiz
19%
A) One-compartment model
31%
B) Two-compartment model
45%
C) Physiological model
5%
D) Non-compartment model
15. Which drug administration route avoids first-pass metabolism?
Anonymous Quiz
14%
A) Oral
70%
B) Intravenous
11%
C) Rectal
5%
D) Subcutaneous
👏2
16. Which pharmacokinetic process primarily follows first-order kinetics?
Anonymous Quiz
50%
A) Drug absorption
30%
B) Drug elimination
13%
C) Drug distribution
6%
D) Drug metabolism
👍2
17. What is the primary advantage of intravenous infusion over bolus injection?
Anonymous Quiz
4%
A) Slower drug clearance
39%
B) Higher bioavailability
54%
C) Maintains a steady drug concentration
3%
D) Increased drug metabolism
👍2
18. Which factor increases renal drug clearance?
Anonymous Quiz
54%
A) Increased renal blood flow
12%
B) Decreased urine pH
25%
C) High plasma protein binding
9%
D) Increased drug lipophilicity
19. The area under the curve (AUC) is mainly used to assess which pharmacokinetic property?
Anonymous Quiz
45%
A) Bioavailability
29%
B) Drug elimination rate
11%
C) Drug-protein binding
15%
D) Volume of distribution
👍1
20. Which parameter determines how quickly a drug is removed from the body?
Anonymous Quiz
53%
A) Clearance (Cl)
20%
B) Volume of distribution (Vd)
11%
C) Absorption rate constant (Ka)
15%
D) Half-life (t1/2)
👍1
21. Which drug is most likely to have a low volume of distribution (Vd)?
Anonymous Quiz
16%
A) A highly lipophilic drug
47%
B) A highly protein-bound drug
25%
C) A drug with extensive tissue binding
12%
D) A drug that crosses the blood-brain barrier
22. What does a high plasma protein binding of a drug indicate?
Anonymous Quiz
8%
A) Faster renal excretion
70%
B) Longer half-life and lower clearance
15%
C) Higher first-pass metabolism
8%
D) Shorter duration of action
👍2
23. In extravascular drug administration, what determines the absorption rate?
Anonymous Quiz
17%
A) Bioavailability
63%
B) Absorption rate constant (Ka)
16%
C) Volume of distribution
4%
D) Renal clearance
❤1👍1
24. What is the key factor affecting first-pass metabolism?
Anonymous Quiz
26%
A) Gastric emptying rate
49%
B) Liver enzyme activity
13%
C) Renal clearance
12%
D) Drug solubility