How do animals get energy from food?

Question

A.
Molecules from the food react with oxygen and release energy.
B.
Molecules from the food react with carbon dioxide and release energy.
C.
Electrical impulses in the body are used to change food into energy.
D.
Sound vibrations in the body are used to change food into energy.

Answer 1

The correct answer is:

A. Molecules from the food react with oxygen and release energy.

This process is known as cellular respiration, where glucose and other nutrients are broken down in the presence of oxygen to release energy that the cells can use.