39. Which one is not a rate-limiting step in lipid metabolism?
(A) Carnitine acytransferase I for fatty acid entry into mitochondria
(B) Acetyl-CoA carboxylase for biosynthesis of fatty acid
(C) PEP carboxykinasc for triacylgiycerol cycle
(D) Acyl transferase for phospholipid synthesis
(E) HMG reductase for cholesterol synthesis
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