Question

TCA cycle enzymes are located in

• A. Cristae of the mitochondria.
• B. Outer membrane of the mitochondria.
• C. Mitochondrial matrix.
• D. Mitochondrial intermembrane space.

Answer 1

Answer: (C)

Mitochondrial matrix.

TCA stands for tricarboxylic acid, is a series of the chemical reaction which is used by all aerobic organisms in cells. This is also known as Kreb's cycle or citric acid cycle. TCA cycle enzymes are located in the mitochondrial matrix. It promotes reaction subject to the production of ATP such as the citric acid cycle, oxidative phosphorylation, oxidation of pyruvate and the beta-oxidation of fatty acids.

So, the correct answer is option C.