MCQ Collection
MDCAT 2026 MCQs
Practice MDCAT 2026 questions with answers and explanations.
Choose an option to check your answer.
A.
24 N
B.
48 N
C.
12 N
D.
25 N
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Correct Answer: A. 24 N
Explanation:
For perpendicular motion, magnetic force is F=qvB.
Choose an option to check your answer.
A.
Damage to DNA and cellular molecules
B.
Creation of chlorophyll
C.
Permanent increase in all enzyme rates
D.
Conversion of bone to muscle
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Correct Answer: A. Damage to DNA and cellular molecules
Explanation:
Semiconductor behavior and quantized energy levels explain the electronic or atomic effect.
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A.
30 N
B.
15 N
C.
7.5 N
D.
16 N
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Correct Answer: B. 15 N
Explanation:
For perpendicular motion, magnetic force is F=qvB.
Choose an option to check your answer.
A.
Transformer
B.
Geiger–Müller counter
C.
Calorimeter
D.
Hydrometer
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Correct Answer: B. Geiger–Müller counter
Explanation:
Semiconductor behavior and quantized energy levels explain the electronic or atomic effect.
Choose an option to check your answer.
A.
0.01 s
B.
0.0025 s
C.
0.005 s
D.
0.105 s
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Correct Answer: C. 0.005 s
Explanation:
The charging or discharging time constant is τ = RC.
Choose an option to check your answer.
A.
0.012 s
B.
0.003 s
C.
0.106 s
D.
0.006 s
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Correct Answer: D. 0.006 s
Explanation:
The charging or discharging time constant is τ = RC.
Choose an option to check your answer.
A.
2.4 A
B.
4.8 A
C.
1.2 A
D.
3.4 A
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Correct Answer: A. 2.4 A
Explanation:
The total series resistance is R+r.
Choose an option to check your answer.
A.
5.143 A
B.
2.571 A
C.
1.286 A
D.
3.571 A
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Correct Answer: B. 2.571 A
Explanation:
The total series resistance is R+r.
Choose an option to check your answer.
A.
4 A
B.
1 A
C.
2 A
D.
3 A
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Correct Answer: C. 2 A
Explanation:
The total series resistance is R+r.
Choose an option to check your answer.
A.
5.714 A
B.
1.429 A
C.
3.857 A
D.
2.857 A
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Correct Answer: D. 2.857 A
Explanation:
The total series resistance is R+r.
Choose an option to check your answer.
A.
Its amino-acid sequence always changes
B.
It becomes a carbohydrate
C.
Its three-dimensional structure and function are disrupted
D.
All peptide bonds necessarily break
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Correct Answer: C. Its three-dimensional structure and function are disrupted
Explanation:
Macromolecular properties depend on bonding, structure and functional groups.
Choose an option to check your answer.
A.
112500 N/C
B.
28125 N/C
C.
56250 N/C
D.
56251 N/C
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Correct Answer: C. 56250 N/C
Explanation:
The electric field of a point charge is E=kq/r².
