AP BIOLOGY

Detailed explanation-1: -Cellular respiration is a chemical process in which food molecules are broken down into simpler molecules within the cells and energy is produced. In cellular respiration, the inhaled oxygen is used for breaking the food. Hence in respiration oxygen is required and carbon dioxide is released out.

Detailed explanation-2: -While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration.

Detailed explanation-3: -Answer: Your ans is True. explanation. during the process of cellular respiration, carbon dioxide is given off as a waste product .

Detailed explanation-4: -Plants, like animals, take in oxygen and give out carbon dioxide during respiration. Only during photosynthesis, plants take in carbon dioxide and release oxygen as a byproduct.

Detailed explanation-5: -Several reviews of the literature have concluded that elevated concentrations of carbon dioxide, [CO2], generally reduce rates of respiration, primarily by a direct effect (c.f. Drake et al., 1999).