What are the three steps of the light-dependent reactions of photosynthesis?

These reactions occur within specialised membrane discs within the chloroplast called thylakoids and involve three steps: Excitation of photosystems by light energy. Production of ATP via an electron transport chain. Reduction of NADP+ and the photolysis of water.

What are the 3 products of the light-dependent reactions?

Glucose, ATP and O2​

What are examples of light-dependent reactions?

Calvin cycle Light-dependent Cycle happens in the thylakoid membrane of the chloroplast. In this reaction, by using water, chlorophyll absorbs the energy from the sun and transforms it into chemical energy. Water (H2O) is split and oxygen (O2) comes out as a by-product.

What is needed for light-dependent reactions?

The light-dependent reactions 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. The photosystems and electron transport chain components are embedded in the thylakoid membrane.

What is the relationship between light-dependent and light-independent reactions in photosynthesis?

In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In the light-independent reactions, the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon dioxide.

What is the difference between light dependent and light independent reaction?

What is needed for light dependent reaction?

The light-dependent reactions 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.

Do light-dependent reactions produce oxygen?

In the light-dependent reactions, which take place at the thylakoid membrane, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water. The light-dependent reactions release oxygen as a byproduct as water is broken apart.

What is true about the light-independent reactions?

The light independent reactions occur in the part of the chloroplast known as the stroma. The purpose of the light independent reactions is to take the energy from ATP and energized electrons and hydrogen ions from NADPH and add them to CO2 to make glucose or sugar.

What are the reactants of light dependent reactions?

Light-Dependent Reactions. The reactants in the light-dependent chemical reaction are adenosine diphosphate (ADP), oxydized nicotinamide adenine dinucleotide phosphate (NADP +) and the hydrogen in water.

What happens in the light and dark reaction of photosynthesis?

The main difference between light and dark reaction is that light reaction is the first stage of photosynthesis, which traps light energy in order to produce ATP and NADPH whereas dark reaction is the second stage of photosynthesis, which produces glucose by using the energy form ATP and NADPH produced from the light reaction.

What are the products of the light-dependent reactions?

The two products of the light-dependent reactions of photosystem are ATP and NADPH. The movement of high energy electrons releases the free energy that is needed to produce these molecules. The ATP and NADPH are used in the light-independent reactions to make sugar.