The second stage of catabolic metabolism occurs in the

A. cell membrane.

B. ribosomes.

C. cytosol.

D. mitochondria.

The correct option is D.

Catabolic metabolism is the process by which large particles of substances are broken down in the body to form smaller particles. Cellular respiration is an example of catabolic process. The process breaks down food particles into smaller particles which are easily absorb by the body and in the process energy is also released. The first stage of the process take place in the cytoplasm while the second stage occur in the mitochondria.