Question

How is water used during the light dependent reactions?

Answer 1

The light-dependent reactions are the reactions which use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.

Complete answer:
The light reaction, also known as the photolysis reaction, occurs in the presence of light. It usually occurs in the grana of chloroplasts.Pigment molecules are found in photosystems. Chlorophyll is one of the primary pigments in plants that actively participates in light reactions such as photosynthesis.

Carotenoids are among the accessory pigments. The sun's energy is absorbed by chlorophyll in the thylakoid membrane of chloroplasts. The energy is then transferred to two-electron transport chains, which produce ATP and NADPH. During the process, water is used, and oxygen is released.

Carrier molecules are used in these two reactions to transport the energy from one to the other. The transporters that move energy from the light-reliant responses to the Calvin cycle responses can be considered as "full" since they bring energy. After the energy is delivered, the "vacant" energy transporters get back to the light-needy responses to get more energy.

When water is split, it produces oxygen, hydrogen, and electrons. These electrons move through chloroplast structures and produce ATP via chemiosmosis. The hydrogen is converted to NADPH, which is then utilized in light-independent reactions. As a waste product, oxygen gas diffuses out of the organism.
In this way,how is water used during the light dependent reactions.

Note: The general reason for the light-reliant responses is to change over sun oriented energy into substance energy as NADPH and ATP. This compound energy will be utilized by the Calvin cycle to fuel the gathering of sugar particles.