AP BIOLOGY

Detailed explanation-1: -All living organisms respire. Cells need and use the energy that is formed through this process to assist with life processes in order for organisms to survive and reproduce. Oxygen and carbon dioxide are the main gases involved in aerobic respiration.

Detailed explanation-2: -The food has stored energy, which is released during respiration. Therefore, all living organisms respire to get energy from food. During breathing, we breathe in air.

Detailed explanation-3: -Respiration is essential for survival of living organisms. It releases energy from the food. The oxygen we inhale is used to breakdown glucose into carbon dioxide and water. Energy is released in the process.

Detailed explanation-4: -Cellular respiration is the release of energy stored in food molecules, and all living things must be capable of it.