VPY-0085
QUESTION
TCA cycle is operative in?
OPTIONS
(A) Mitochondria
(B) Microsomes
(C) Cytosol
(D) None of these
ANSWER
(A) Mitochondria
EXPLANATION
Mitochondria is the correct option because the tricarboxylic acid cycle occurs in the mitochondrial matrix, where acetyl-CoA is oxidized and reducing equivalents are generated for the electron transport chain. Microsomes are membrane vesicles derived mainly from endoplasmic reticulum, while cytosol is the principal site of glycolysis rather than the TCA cycle.
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