試題詳解

31. A marathon runner is engaged in a 20-mile run. During a 20-mile run, there is an increase in the rate at which acyl-CoA is taken up by the mitochondria and used by β-oxidation. Part of the increase can be explained by the increase fatty acid entering the cell and part is explained by all of the following except
(A) Glucagon triggers the release of free fatty acids from adipose tissue to meet energy needs.
(B) AMP-dependent protein kinase (AMPK) causes the phosphorylation of acetyl-CoA carboxylase.
(C) Phosphorylation of acetyl-CoA carboxylase inhibits the production of malonyl-CoA.
(D) The malonyl-CoA concentration drops and inhibition of carnitine-acyltransferase II is removed.
(E) Much more acyl-carnitine is available to use the carnitine/acyl-carnitine transporter