Question

In mitochondria, enzyme cytochrome oxidase is present in

• A. Outer membrane
• B. Perimitochondrial space
• C. Inner membrane
• D. Matrix

Answer 1

Answer: (C)

Mitochondria contain various enzymes as follows:
Outer Membrane: Acetyl transferase, glycerophosphatase, phospholipase-A, monoamine oxidase, etc.
Inner Membrane: Cytochrome oxidase, dehydrogenase, succinate dehydrogenase, NADH dehydrogenase, ATPase, etc.
Perimitochondrial Space: Adenylate kinase, nucleoside diphosphokinase, etc.
Matrix: Pyruvate dehydrogenase, citrate synthase, Aconitase, isocitrate dehydrogenase, fumarase.