what happens during the light dependent reactions

The chloroplasts’ membranous sacs (thylakoids), are the site of photosynthetic light reactions and involves the transfer of electrons from a photoexecuted state from the chlorophyll inside the thylakoid membranes to the stroma, which then produces ATP.

Which process occurs during the light-dependent reactions in photosynthesis quizlet?

Which process occurs during the light-dependent reactions in photosynthesis? Water molecules are split. … ATP and NADPH are produced in the light-dependent reactions and used in the light-independent reactions.

Why is photosynthesis a light dependent reaction?

Explanation: Light reactions of photosynthesis are light dependent reactions. They are light dependent because for the process to start, a light ray should impinge on the chlorophyll and only then the reactions of photosynthesis begin.

What does not occur during the light-dependent reactions of photosynthesis?

Of the following, carbon fixation does not occur during the light-dependent reactions of photosynthesis.

What happens during light reaction Mcq?

During the light, reaction water is oxidized using energy from light and reduced NADPH₂ and ATP are synthesized. The oxidation of water is called photolysis. Oxygen is released as a by-product during the photolysis of water. The NADPH₂ and ATP are used subsequently to reduce carbon dioxide into sugars.

Which one of these reactions occurs during photosynthesis?

During photosynthesis, plants take in carbon dioxide (CO₂) and water (H₂O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.

Do light reactions depend on the Calvin cycle?

The Calvin cycle refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the Calvin Cycle is not directly dependent on light, it is indirectly dependent on light since the necessary energy carriers ( ATP and NADPH) are products of light-dependent reactions.

What happens during light and dark reactions of photosynthesis?

The light reactions of photosynthesis involve light-driven electron and proton transfers, which occur in the thylakoid membrane, whereas the dark reactions involve the fixation of CO₂ into carbohydrate, via the Calvin–Benson cycle, which occurs in the stroma (Figure 3).