Final answer:
ATP and NADPH are two important products of the light-dependent reactions in photosynthesis. They are used to provide energy and reducing power for the synthesis of glucose in the light-independent reactions.
Step-by-step explanation:
The correct answer is a) ATP and NADPH. ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate) are two important products of the light-dependent reactions in photosynthesis. These reactions occur in the thylakoid membranes of chloroplasts and are responsible for converting light energy into chemical energy.
During the light-dependent reactions, light energy is absorbed by chlorophyll molecules, which excites electrons. These electrons are then passed through a series of electron carriers, generating ATP through ATP synthase and NADPH through the reduction of NADP+.
This energy-rich ATP and reducing power of NADPH are subsequently used in the light-independent reactions (also known as the Calvin cycle) to convert carbon dioxide into glucose. Therefore, ATP and NADPH are essential products of the light-dependent reactions, providing the energy and reducing power necessary for the synthesis of glucose.