MCQ Collection
MDCAT 2026 MCQs
Practice MDCAT 2026 questions with answers and explanations.
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Correct Answer: C. RNA carrying coding information from DNA to ribosomes
Explanation:
MRNA contains codons specifying amino-acid sequence.
It is translated by ribosomes.
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Correct Answer: D. 64
Explanation:
These are descending squares: 12², 11², 10², and 9².
The next term is 8² = 64.
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Correct Answer: D. The DNA strand synthesized continuously toward the replication fork
Explanation:
DNA polymerase can follow the fork continuously on the leading template.
Synthesis still proceeds 5′ to 3′.
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Correct Answer: A. 192
Explanation:
Each term is multiplied by 2.
Therefore, 96 × 2 = 192.
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Correct Answer: A. The DNA strand synthesized continuously toward the replication fork
Explanation:
DNA polymerase can follow the fork continuously on the leading template.
Synthesis still proceeds 5′ to 3′.
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Correct Answer: B. I
Explanation:
The sequence skips one letter each time.
After G, the next alternate letter is I.
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Correct Answer: B. The DNA strand synthesized discontinuously as Okazaki fragments
Explanation:
Its template orientation requires repeated short segments.
Ligase later joins these fragments.
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Correct Answer: C. R
Explanation:
The sequence moves backward by two letters.
Two letters before T is R.
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Correct Answer: C. The DNA strand synthesized discontinuously as Okazaki fragments
Explanation:
Its template orientation requires repeated short segments.
Ligase later joins these fragments.
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Correct Answer: D. N
Explanation:
Each term advances by three alphabet positions.
K plus three letters gives N.
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Correct Answer: D. The DNA strand synthesized discontinuously as Okazaki fragments
Explanation:
Its template orientation requires repeated short segments.
Ligase later joins these fragments.
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Correct Answer: A. Y
Explanation:
The letter positions are 1, 4, 9, and 16, which are perfect squares.
The next square is 25, corresponding to Y.
