Select the most accurate statement describing the basic function of the light reactions of photosynthesis

General
1

select the most accurate statement describing the basic function of the light reactions of photosynthesis.

2

Select the most accurate statement describing the basic function of the light reactions of photosynthesis.

Answer: The primary function of the light reactions in photosynthesis is to convert solar energy into chemical energy. During these reactions, light energy is captured by chlorophyll and used to generate ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate) through processes involving the splitting of water molecules and the release of oxygen.

Step-by-Step Breakdown:

  1. Capture of Light Energy: Chlorophyll and other pigments in the chloroplasts absorb light energy.
  2. Water Splitting (Photolysis): Light energy drives the splitting of water molecules into oxygen, protons, and electrons.
  3. ATP and NADPH Formation: The light energy is used to convert ADP and NADP+ into ATP and NADPH, which store energy and are used in the Calvin cycle to synthesize glucose.

Summary: The light reactions transform solar energy into chemical energy in the form of ATP and NADPH, providing the necessary ingredients for the subsequent synthesis of carbohydrates in the Calvin cycle.