MCQ Collection
MDCAT 2026 MCQs
Practice MDCAT 2026 questions with answers and explanations.
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Correct Answer: C. A response that counteracts a change
Explanation:
Negative feedback stabilizes variables such as temperature and glucose.
It is the most common homeostatic mechanism.
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Correct Answer: D. A response that counteracts a change
Explanation:
Negative feedback stabilizes variables such as temperature and glucose.
It is the most common homeostatic mechanism.
Choose an option to check your answer.
Correct Answer: A. Reproduction involving one parent without gamete fusion
Explanation:
Asexual offspring are usually genetically similar to the parent.
Examples include binary fission, budding, and vegetative propagation.
Choose an option to check your answer.
Correct Answer: A. A response that counteracts a change
Explanation:
Negative feedback stabilizes variables such as temperature and glucose.
It is the most common homeostatic mechanism.
Choose an option to check your answer.
Correct Answer: B. Reproduction involving one parent without gamete fusion
Explanation:
Asexual offspring are usually genetically similar to the parent.
Examples include binary fission, budding, and vegetative propagation.
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Correct Answer: B. A response that amplifies an initial change
Explanation:
Positive feedback drives a process toward completion.
Examples include blood clotting and labor contractions.
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Correct Answer: C. Reproduction involving fusion of gametes
Explanation:
Sexual reproduction combines genetic material from two gametes.
It increases genetic variation.
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Correct Answer: C. A response that amplifies an initial change
Explanation:
Positive feedback drives a process toward completion.
Examples include blood clotting and labor contractions.
Choose an option to check your answer.
Correct Answer: D. Reproduction involving fusion of gametes
Explanation:
Sexual reproduction combines genetic material from two gametes.
It increases genetic variation.
Choose an option to check your answer.
Correct Answer: D. A response that amplifies an initial change
Explanation:
Positive feedback drives a process toward completion.
Examples include blood clotting and labor contractions.
Choose an option to check your answer.
Correct Answer: A. Reproduction involving fusion of gametes
Explanation:
Sexual reproduction combines genetic material from two gametes.
It increases genetic variation.
Choose an option to check your answer.
Correct Answer: B. Fusion of haploid gametes to form a diploid zygote
Explanation:
Fertilization restores the diploid chromosome number.
The resulting zygote begins development.
