MCAT Biology Question 7: Answer and Explanation
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Question: 7
7. What is the main function of the nucleolus?
- A. Ribosomal RNA synthesis
- B. DNA replication
- C. Cell division
- D. Chromosome assembly
Correct Answer: A
Explanation:
The nucleolus (not to be confused with the nucleus in general) is a dense structure within the nucleus where ribosomal RNA (rRNA) is synthesized. Choice (A) is therefore the correct answer.