MCQ Collection
Australia & New Zealand MCQs
Practice Australia & New Zealand questions with answers and explanations.
Choose an option to check your answer.
A.
6.25
B.
25
C.
50
D.
12.5
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Correct Answer: D. 12.5
Explanation:
After three half-lives, (1/2)^3=12.5%.
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A.
A competitive antagonist usually shifts the agonist concentration–response curve to the right without reducing the maximal response.
B.
It always raises the maximal response.
C.
It removes the need for agonist binding.
D.
It irreversibly increases efficacy.
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Correct Answer: A. A competitive antagonist usually shifts the agonist concentration–response curve to the right without reducing the maximal response.
Explanation:
A competitive antagonist usually shifts the agonist concentration–response curve to the right without reducing the maximal response.
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A.
It guarantees chemical stability.
B.
Reducing particle size can increase dissolution rate by increasing surface area.
C.
It eliminates first-pass metabolism.
D.
It always decreases surface area.
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Correct Answer: B. Reducing particle size can increase dissolution rate by increasing surface area.
Explanation:
Reducing particle size can increase dissolution rate by increasing surface area.
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A.
10.0
B.
1.0
C.
0.1
D.
6.6
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Correct Answer: A. 10.0
Explanation:
For a weak acid, [A−]/[HA]=10^(pH−pKa).
Choose an option to check your answer.
A.
Bacteriostatic agents always destroy spores.
B.
Both terms mean viral inactivation.
C.
Bactericidal agents cannot have resistance.
D.
Bactericidal activity kills susceptible bacteria, whereas bacteriostatic activity inhibits growth.
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Correct Answer: D. Bactericidal activity kills susceptible bacteria, whereas bacteriostatic activity inhibits growth.
Explanation:
Bactericidal activity kills susceptible bacteria, whereas bacteriostatic activity inhibits growth.
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A.
Phase I reactions commonly introduce or expose functional groups through oxidation, reduction or hydrolysis.
B.
Phase I always produces an inactive metabolite.
C.
Phase I reactions occur only outside the body.
D.
Phase I is limited to renal filtration.
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Correct Answer: A. Phase I reactions commonly introduce or expose functional groups through oxidation, reduction or hydrolysis.
Explanation:
Phase I reactions commonly introduce or expose functional groups through oxidation, reduction or hydrolysis.
Choose an option to check your answer.
A.
99.9
B.
87.6
C.
114.1
D.
13.2
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Correct Answer: B. 87.6
Explanation:
Use fraction remaining=e^(−kt).
Choose an option to check your answer.
A.
Randomisation guarantees zero measurement error.
B.
A randomised controlled design reduces allocation bias and supports causal inference when well conducted.
C.
Blinding always increases sample size.
D.
A case report proves population causality.
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Correct Answer: B. A randomised controlled design reduces allocation bias and supports causal inference when well conducted.
Explanation:
A randomised controlled design reduces allocation bias and supports causal inference when well conducted.
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A.
Positive predictive value depends on disease prevalence as well as test performance.
B.
It is always equal to sensitivity.
C.
It must be 100% when specificity is above 50%.
D.
It is independent of prevalence.
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Correct Answer: A. Positive predictive value depends on disease prevalence as well as test performance.
Explanation:
Positive predictive value depends on disease prevalence as well as test performance.
Choose an option to check your answer.
A.
A depot formulation can prolong drug release and reduce dosing frequency.
B.
It prevents every adverse effect.
C.
It guarantees immediate peak concentration.
D.
It is identical to an intravenous bolus.
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Correct Answer: A. A depot formulation can prolong drug release and reduce dosing frequency.
Explanation:
A depot formulation can prolong drug release and reduce dosing frequency.
Choose an option to check your answer.
A.
3.27
B.
5.27
C.
0.306
D.
12978
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Correct Answer: A. 3.27
Explanation:
Concentration=amount/volume.
Choose an option to check your answer.
A.
23.38
B.
0.048
C.
21.05
D.
3556.8
Show Answer
Correct Answer: C. 21.05
Explanation:
Apply AUC=F×Dose/CL.
