MCAT Biochemistry Question 159: Answer and Explanation
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Question: 159
9. Which of the following best characterizes the process of fatty acid synthesis?
- A. Two reductions followed by a dehydration and bond formation.
- B. Reduction followed by activation, bond formation, dehydration, and reduction.
- C. Activation followed by bond formation, reduction, dehydration, and reduction.
- D. Activation followed by bond formation, oxidation, dehydration, and reduction.
Correct Answer: C
Explanation:
The steps in fatty acid synthesis are activation (attachment to acyl carrier protein), bond formation (between malonyl-CoA and the growing fatty acid chain), reduction (of a carboxyl group), dehydration, and reduction (of a double bond).