Which of the following describes a use for acetyl-CoA as an important intermediate in metabolism? A) Breakdown to CO₂ and water, yielding much energy. B) Synthesis of terpenes and steroids. C) Synthesis of oxaloacetate in plants. D) Synthesis of fatty acids. E) All of these are reasons why acetyl-CoA is a central molecule in metabolism.

Question

Quizplus · Accepted Answer

Acetyl-CoA is a central molecule in metabolism because it is involved in multiple biochemical pathways. It is a key intermediate in the synthesis of fatty acids (D), terpenes, and steroids (B). Although it does not directly synthesize oxaloacetate in plants, it is involved in the citric acid cycle, which is crucial for energy production in both plants and animals. The breakdown to carbon dioxide and water (A) refers to its role in the citric acid cycle, where it is fully oxidized to produce energy. Therefore, all of the options provided highlight the importance of acetyl-CoA in metabolism.

Which of the Following Describes a Use for Acetyl-CoA as an Important