Question

review: in photosynthesis and respiration, energy is converted from one form to another. light is a form of radiant energy. glucose and atp molecules store chemical energy. a. during photosynthesis, what role is played by the radiant energy of the sun? explain your answer.

Explanation:

Photosynthesis is a process where plants convert carbon dioxide and water into glucose and oxygen. The radiant energy from the Sun is absorbed by chlorophyll in the chloroplasts. This energy is used to split water molecules (photolysis) and also powers the synthesis of ATP (adenosine triphosphate) from ADP (adenosine diphosphate) and inorganic phosphate. These processes (light - dependent reactions) provide the necessary reducing power (NADPH) and energy (ATP) for the subsequent light - independent reactions (Calvin cycle) where carbon dioxide is fixed into glucose. So, the radiant energy of the Sun is the initial energy source that drives the entire photosynthetic process, converting it from radiant energy to chemical energy stored in glucose and ATP.

Answer:

The radiant energy of the Sun is absorbed by chlorophyll. It is used to split water molecules (photolysis) and synthesize ATP. This energy is then used in the light - independent reactions to convert carbon dioxide into glucose. So, the Sun's radiant energy is the initial energy input that is converted into chemical energy (stored in glucose and ATP) during photosynthesis.