Before they enter the tricarboxylic acid (TCA) cycle, fatty acids are broken down to
a. keto acids.
b. pyruvic acid.
c. ketone bodies.
d. acetyl coenzyme A.
D
Fatty acids are broken down to acetyl coenzyme A before they enter the TCA cycle. Keto acids are formed as protein is metabolized to release energy. Pyruvic acid is a substance that is formed as nutrients are converted to acetyl coenzyme A. Ketone bodies are formed when fat is metabo-lized to release energy and there is insufficient oxygen for aerobic glycolysis.
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