EVERYDAY SCIENCE

Detailed explanation-1: -Cellular respiration uses glucose and oxygen to make carbon dioxide, water, and ATP. The molecule ATP is used for energy to run cellular processes. Carbon dioxide is released to the atmosphere where it is used in photosynthesis by plants. The process of photosynthesis uses ATP for energy to build glucose.

Detailed explanation-2: -CO2 is transported in the bloodstream to the lungs where it is ultimately removed from the body through exhalation. CO2 plays various roles in the human body including regulation of blood pH, respiratory drive, and affinity of hemoglobin for oxygen (O2).

Detailed explanation-3: -Answer and Explanation: Cellular respiration is best described as E) changing of stored chemical energy in food molecules to a form usable by organisms.

Detailed explanation-4: -Answer and Explanation: Carbon dioxide is released during B) oxidation of pyruvate to acetyl CoA and the citric acid cycle. during cellular respiration. During pyruvate oxidation, one carbon dioxide molecule is released per pyruvate (2 per glucose molecule).

Detailed explanation-5: -Cellular respiration is the process that occurs in the mitochondria of organisms (animals and plants) to break down sugar in the presence of oxygen to release energy in the form of ATP. This process releases carbon dioxide and water as waste products.