Photosynthesis takes place in twp major stages:
1) the light-dependent stage converts light energy into chemical energy (ATP) and reducing power (NADPH); in this process water is broken down and oxygen is released
2) the light-independent stage uses the products of the light-dependent stage (ATP and NADPH) to reduce carbon dioxide to carbohydrate
The two major sets of reactions involved in photosynthesis are the light-dependent reactions and the light-independent reactions (Calvin cycle). In the light-dependent reactions, light energy is used to produce ATP and NADPH, while in the Calvin cycle, ATP and NADPH are used to convert carbon dioxide into glucose.
splitting of water molecules
The light reactions provide energy carriers for the dark reactions.
No, the light reactions occur while light is present; however, the Calvin Cycle or light-independent reactions can occur any time. The light-independent reactions require photons, or energy stored from the light reactions, to complete photosynthesis.
The light reactions occur in the thylakoid membrane of the chloroplast. The primary goal of the light reactions is to convert light energy into chemical energy in the form of ATP and NADPH. Water is split during the light reactions to provide electrons for the photosystems. The light reactions produce oxygen as a byproduct.
The biochemical reactions involving photolysis of water comes under light reaction. It is infect a chain of reactions commonly known as light phase.
splitting of water molecules
Photosynthesis starts with the Light-Dependent reactions, which begins with radiant/light energy. By the time it has finished the Light-Independent Reactions, which comes after the dependent ones, it converts the light/radiant energy to glucose, or chemical energy.
The two major sets of reactions involved in photosynthesis are the light-dependent reactions and the light-independent reactions (Calvin cycle). In the light-dependent reactions, light energy is used to produce ATP and NADPH, while in the Calvin cycle, ATP and NADPH are used to convert carbon dioxide into glucose.
The energy to make NADPH in the light reactions of photosynthesis comes from sunlight. Light energy is absorbed by chlorophyll molecules in the chloroplasts of plant cells, which triggers a series of reactions that ultimately produce NADPH.
splitting of water molecules
Most of the light emitted by the Sun comes from its core, where nuclear fusion reactions occur. These reactions convert hydrogen into helium, releasing a tremendous amount of energy in the form of light and heat. This energy then travels outwards, eventually reaching the Sun's surface and being emitted into space as sunlight.
The products of light-dependent reactions are used in light-independent reactions.
The light reactions provide energy carriers for the dark reactions.
Light-dependent reactions are those that require light to proceed.
Differences: >light reactions occur in the thykaloid membranes, but dark occur in stroma >light reactions are light dependent, or they need light to take place, whereas dark reactions don't > dark reactions use the products of the light reactions >light reactions are the first step of photosynthesis and dark reactions are the second step Similarities: >both in photosynthesis Thats really the only similarity!!! hope this helps :)
The heat of the sun comes from nuclear fusion reactions in its core. These reactions convert hydrogen into helium, releasing enormous amounts of energy in the form of heat and light.