MCAT Biology Question 159: Answer and Explanation
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Question: 159
9. Which type(s) of muscle is/are always multinucleated?
I. Cardiac muscle
II. Skeletal muscle
III. Smooth muscle
- A. I only
- B. II only
- C. III only
- D. I and II only
Correct Answer: B
Explanation:
The only type of muscle that is always multinucleated is skeletal muscle, making choice (B) the correct answer. Cardiac muscle may contain one or two centrally located nuclei, so statement I is incorrect. Smooth muscle, on the other hand, always has only one centrally located nucleus.