AP BIOLOGY

Detailed explanation-1: -Photosynthesis is often regarded as a CO2 anabolic reaction, whereby glucose is formed from CO2 and water. CO2 anabolism is an energy-consuming reaction in that it utilises chemical energy produced by photosynthesis.

Detailed explanation-2: –Therefore, the photosynthesis is an anabolic process as it forms substances like glucose and water in presence of sunlight by combining carbon dioxide and water. The respiration is a catabolic process as it breaks the complex molecules into simple molecules and releases energy in the form of ATP.

Detailed explanation-3: -Photosynthesis is an endothermic reaction. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.

Detailed explanation-4: -It is not a catabolic process because it does not release energy and neither are its intermediates used as precursors for other compounds and hence it is neither amphibolic. It involves the absorption of solar energy and the production of molecules which have greater free energy than the reactants.

Detailed explanation-5: -Assertion(A): Photosynthesis is an endothermic reaction. Reason(R): Energy gets released in the process of photosynthesis.