Mitochondrial enzymes for oxidative metabolism are

On or within the surface of cristae

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Located on the outer membrane

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Floating freely in intermembrane

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In the mitochondrial lysosomes

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Solution

The correct option is A On or within the surface of cristae
The inner membrane of the mitochondria folds inwards to form finger-like projection known as cristae. The cristae help to increase the surface area. It is studded with F1 particles or oxysomes which help in oxidative phosphorylation. There are enzymes on the oxysomes which are involved in the oxidative phases of respiration.
Thus, the correct answer is option A.

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