21. When carbohydrate intake is low,______ are formed from acetate units to provide metabolic fuel for the ______and other tissue.
(A) fatty acids; liver
(B) ketone bodies; brain
(C) ketone bodies; liver
(D) amino acids; brain
(E) sterols; heart
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統計: A(1), B(1), C(1), D(0), E(0) #3207612
統計: A(1), B(1), C(1), D(0), E(0) #3207612