Which of the following is (are) true of the -oxidation of long-chain fatty acids?
1. The enzyme complex that catalyzes the reaction contains biotin.
2. FADH₂ serves as an electron carrier.
3. NADH serves as an electron carrier.
4. Oxidation of an 18-carbon fatty acid produces six molecules of propionyl-CoA.
5. Oxidation of a 15-carbon fatty acid produces at least one propionyl-CoA.

Question

Quizplus · Accepted Answer

1. False - The enzyme complex that catalyzes the reaction does not contain biotin, instead, it contains enzymes such as acyl-CoA dehydrogenase and enoyl-CoA hydratase.
2. True - FADH2 serves as an electron carrier in the β-oxidation of long-chain fatty acids.
3. True - NADH also serves as an electron carrier in the β-oxidation of long-chain fatty acids.
4. True - Oxidation of an 18-carbon fatty acid would produce eight molecules of acetyl-CoA and nine molecules of FADH2 and nine molecules of NADH. Propionyl-CoA is not a product of β-oxidation of long-chain fatty acids.
5. True - Oxidation of a 15-carbon fatty acid would produce seven molecules of acetyl-CoA and eight molecules of FADH2 and eight molecules of NADH. One of the eight molecules of NADH would produce one molecule of propionyl-CoA through an additional enzymatic reaction.

Which of the Following Is (Are) True of the -Oxidation