AP BIOLOGY

Detailed explanation-1: -The oxygen atoms, however, form oxygen gas, which is a waste product of photosynthesis.

Detailed explanation-2: -In (a) photosystem II, the electron comes from the splitting of water, which releases oxygen as a waste product.

Detailed explanation-3: -Carbon dioxide is a waste product of aerobic respiration in plant cells.

Detailed explanation-4: -Some of the oxygen produced in the process of photosynthesis is used in respiration by the leaf cells but the major portion of it is not required and it diffuses out into the atmosphere through the stomata. Therefore, it may be called a waste product of photosynthesis.

Detailed explanation-5: -Photosystem II is the first membrane protein complex in oxygenic photosynthetic organisms in nature. It produces atmospheric oxygen to catalyze the photo-oxidation of water by using light energy.