Answer:
C
Explanation:
Oxygen is used the ultimate proton acceptor in the mitochondria of cells. During the Krebs cycle, the H+ ions produces from oxidation of FADH2 and NADH are pumped to the inter-membrane space. The proton motive force generated is used to make ATPs and ultimately reduce oxygen to water.
Answer: Energy
Explanation:
Cellular respiration is the process by which the carbohydrates in the body is broken down and energy is released.In case of aerobic respiration oxygen is required during this process.
The cellular respiration can be defined as the process by which the bonds are broken and energy is released by ATP.
This energy is used by the cells of the body for performing various tasks. Hence, oxygen is required for the production of energy.
