MCAT Biology Question 10: Answer and Explanation
Home > MCAT Test > MCAT biology practice tests
Test Information
- Use your browser's back button to return to your test results.
- Do more MCAT biology practice tests.
Question: 10
10. Which of the following does NOT contain tubulin?
- A. Cilia
- B. Flagella
- C. Microfilaments
- D. Centrioles
Correct Answer: C
Explanation:
Tubulin is the primary protein in microtubules, which are responsible for the structure and movement of cilia and flagella, eliminating choices (A) and (B). Centrioles organize microtubules in the mitotic spindle, eliminating choice (D). Microfilaments are not composed of tubulin, but rather actin, making choice (C) the correct answer.