Answer:
The mechanism by which organisms use oxygen to break down food molecules in order to obtain chemical energy for cell functions is known as cellular respiration. In the absence of oxygen, cells can generate energy by fermenting food, a mechanism known as anaerobic respiration.
Explanation:
- Eijiro <3
Answer:
They are need in small quantities is false
Explanation:
I would assume that it would be A
The correct answer i think is antibodies
