AP BIOLOGY

Detailed explanation-1: -Light dependent reactions occur in Grana of Chloroplasts, Light Independent reactions occur in Stroma of Chloroplasts. Hence Chloroplasts are required for both the light-dependent and light-independent reactions to proceed.

Detailed explanation-2: -The goal of the light-dependent reactions of photosynthesis is to collect energy from the sun and break down water molecules to produce ATP and NADPH. These two energy-storing molecules are then used in the light-independent reactions.

Detailed explanation-3: -This process occurs within the thylakoids of the chloroplast organelle and makes oxygen gas, as well as ATP and NADPH. Light-independent reactions require carbon dioxide, as well as ATP and NADPH from the light-dependent reactions.

Detailed explanation-4: -The light-independent reactions can proceed once products (NADPH and ATP) of the light-dependent reactions are present in the chloroplast.

Detailed explanation-5: -Photosynthesis occurs in the chloroplasts, the light-dependent reactions are located on the innermost membrane of chloroplasts called thylakoid membrane and light-independent reactions occur in the cytoplasm of the chloroplasts called stroma [17].