試題詳解

37. The unsaturated fatty acid contains one or more double bonds. Which of the following statements regarding the metabolism of unsaturated fatty acid is correct?
(A) The double bonds of unsaturated fatty acids are in the cis configuration, making them to easily react with hydratase for oxidation.
(B) When oxidizing an unsaturated fatty acid, the double bond must be first reduced to a single bond before it can be further processed in the beta-oxidation pathway.
(C) The unsaturated fatty acid, compared to saturated fatty acid with the same carbon numbers, causes a change of acetyl-CoA production in the oxidation pathway.
(D) The oxidation of a monounsaturated fatty acid may skip one reaction of dehydrogenation during beta-oxidation due to the presence of the cis double bond in the fatty acid chain.
(E) The oxidation of unsaturated fatty acids requires the cofactor biotin to catalyze the reaction.