74. Which of the following statements concerning fatty acid metabolisms is FALSE?
(A) De novo fatty acid biosynthesis occurs in the cytosol.
(B) The synthesis of oleic acid from palmitic acid is in the cytosol.
(C) Ketone body formation occurs predominantly in mitochondria.
(D) Acetyl-CoA for de novo fatty acid biosynthesis is formed by citrate cleavage.
(E) For storing triglyceride, the predominant fatty acyl group is oleic acid.

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統計: A(3), B(34), C(8), D(9), E(8) #3224855

詳解 (共 2 筆)

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De novo in Cytosol,E...
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b) The synthesis of oleic acid from palmitic acid is in the cytosol. FALSE 
desaturation of fatty acids (stearic acid -> oleic acid) occurs in the ER. 
這個反應需要: O2, NADH, cytochrome b5. 
ㅤㅤ
*Oleic acid 油酸 (C18:1, Δ9) = 是儲存在脂肪組織(adipose tissue) 中最常見的脂肪酸. 
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