What is produced in the electron transport system associated with photosystem II? The splitting of water molecules provides a source of electrons. ATP is formed. Chlorophyll (and other pigments) absorbs light energy, which excites electrons.

What are the end products of light reactions?

• Hint: The process of using the energy in sunlight to make food (glucose) is known as photosynthesis.
• Complete answer:
• Therefore, the end products are ATP and NADPH.
• Note: The ATP and NADPH from the light-dependent reactions are used to make sugars in the Calvin cycle.

Light reactions harness energy from the sun to produce chemical bonds, ATP, and NADPH. These energy-carrying molecules are made in the stroma where carbon fixation takes place.

The light reaction takes place in the thylakoid discs. In this reaction, the energy from ATP and NADPH are used to fix carbon dioxide (CO2). The products of this reaction are sugar molecules and other organic molecules necessary for cell function and metabolism.

Carbon fixation or сarbon assimilation is the process by which inorganic carbon (particularly in the form of carbon dioxide) is converted to organic compounds by living organisms. The compounds are then used to store energy and as structure for other biomolecules.

The electron transport chain helps to move electrons from PS 2 to PS 1. It makes oxidation-reduction reactions within the photosystems. It also uses energy to bring in hydrogren molecules to make a concentration gradient in the thylakoid compartment, which eventually creates ATP due to ATP synthase.

ATP,O2 and NADPH are the products.

Light energy is harnessed in Photosystems I and II, both of which are present in the thylakoid membranes of chloroplasts. In light-independent reactions (the Calvin cycle), carbohydrate molecules are assembled from carbon dioxide using the chemical energy harvested during the light-dependent reactions.