Question

The process in which an animal’s cells use oxygen and digested food molecules to release the energy in food is called

a. Breathing
b. cellular respiration
c. diffusion
d. gas exchange

Answer 1

B because for example, living things breathe, but it goes through a process. And that's cellular respiration.

Answer 2

The correct answer would be b. cellular respiration.

Cellular respiration is defined as the set of metabolic reactions taking place in a cell in order to harness energy from food and convert it in the form of ATP (adenosine triphosphate).

It includes glycolysis, pyruvate decarboxylation, Krebs cycle, and oxidative phosphorylation (electron transport chain, and chemiosmosis).

It requires oxygen for complete oxidation of food (glucose) in order to produce ATP and release carbon dioxide as a byproduct.

The overall reaction can be written as:

C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy (ATP)