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

a
enzymes
b
chlorophyll
c
organic molecules
d
oxygen
e
carbon dioxide

a) enzymes

c) organic molecules
d) oxygen

The substances that must be present in mitochondria for the process of aerobic respiration to take place are:

a) Enzymes
c) Organic molecules
d) Oxygen

To determine which substances must be present in mitochondria for the process of aerobic respiration to take place, we need to understand the requirements of this metabolic process.

Aerobic respiration is the process by which cells convert organic molecules, especially glucose, into carbon dioxide, water, and energy. It occurs in the mitochondria of cells.

Among the options listed, the correct substances that must be present in mitochondria for aerobic respiration to occur are:

a) Enzymes: Enzymes are biological molecules that act as catalysts to speed up the chemical reactions involved in respiration. They are responsible for converting glucose and other organic molecules into usable energy.

c) Organic Molecules: Aerobic respiration requires organic molecules as fuel. Glucose is the most common organic molecule used in this process, although other molecules like fatty acids and amino acids can also be used.

d) Oxygen: Oxygen is essential for aerobic respiration. It serves as the final electron acceptor in the electron transport chain, a crucial step in the process. Without oxygen, cells would resort to anaerobic respiration or fermentation.

Therefore, the correct substances that must be present in mitochondria for the process of aerobic respiration to take place are a) enzymes, c) organic molecules, and d) oxygen.