Select all of the substances that must be present in mitochondria for the process of aerobic respiration to take place.

For the process of aerobic respiration to take place in mitochondria, the following substances must be present:

A. Organic molecules - required as the fuel (such as glucose).
D. Enzymes - essential for facilitating the biochemical reactions involved in the respiration process.
E. Oxygen - necessary for the terminal electron acceptor in the electron transport chain.

So, the correct answers are A, D, and E.

B. Chlorophyll is not required for aerobic respiration, as it is involved in photosynthesis, and C. Carbon dioxide is a byproduct of aerobic respiration rather than a requirement for the process itself.