Question

the main reason that cellular respiration needs to occur step by step is because
a cells do not store enough oxygen.
b cells do not contain many mitochondria.
c glucose breaks down slowly inside a cell.
d it enables cells to harness energy released at each step.
e cells produce the enzymes needed for cellular respiration very slowly.

Explanation:

Cellular respiration is a multi - step process to efficiently capture and use the energy released from the breakdown of glucose. Each step allows cells to harness energy in the form of ATP. Storing oxygen, number of mitochondria, glucose breakdown rate, and enzyme production rate are not the main reasons for the step - by - step nature of cellular respiration.

Answer:

D. it enables cells to harness energy released at each step.