What does light-dependent reaction use?
What does light-dependent reaction use?
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.
What are the steps of light-dependent reactions?
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 happens during the light-independent reactions?
In the light-independent reactions or Calvin cycle, the energized electrons from the light-dependent reactions provide the energy to form carbohydrates from carbon dioxide molecules. The light-independent reactions are sometimes called the Calvin cycle because of the cyclical nature of the process.
What are the reactants of light-dependent reactions?
Explanation: Light dependent reactions convert solar energy to chemical energy (in the form of ATP and NADPH). Sunlight and H2O are the reactant of the light dependent reaction. The sunlight is captured by photosystem II, and is used to excite electrons.
What comes out of light-dependent reactions quizlet?
The light-dependent reactions produce oxygen gas and convert ADP and NADP+ into the carriers ATP and NADPH.
Which substance is light-dependent reactions of photosynthesis?
The ATP and NADPH which are produced in the light-dependent reactions are utilised as the source of energy in the Calvin Cycle.
Where do light reactions occur?
thylakoid discs
The light reaction takes place in the thylakoid discs. There, water (H20) is oxidized, and oxygen (O2) is released. The electrons freed up from water are transfered to ATP and NADPH. The dark reaction occurs outside of the thylakoids.
Which best describe light-independent reactions?
Which best describes light-independent reactions? They are the first stage of photosynthesis. They utilize the energy stored in ATP and NADPH.
What are the products to the light reactions?
The end products of the light reaction are ATP and NADPH, also known as assimilatory powers.
What are the reactants of the light-dependent reactions of photosynthesis quizlet?
The reactants of light-dependent reactions in photosynthesis are H20 (water), ADP, and NADP+. The products of light-dependent pathways of photosynthesis are Oxygen, ATP, and NADPH. The reactants of light-independent reactions are ATP, NADPH, and Carbon Dioxide.
Where do light-dependent reactions occur?
thylakoid membrane
Light-dependent reactions happen in the thylakoid membrane of the chloroplasts and occur in the presence of sunlight. The sunlight is converted to chemical energy during these reactions. The chlorophyll in the plants absorb sunlight and transfers to the photosystem which are responsible for photosynthesis.