The first phase of photosynthesis is the light-dependent reactions, which occur in the thylakoid membranes of chloroplasts. In this phase, light energy is captured and used to split water molecules into oxygen, protons, and electrons.
The main characteristic of the first stage of photosynthesis, called the light-dependent reactions, is that it takes place in the thylakoid membrane of the chloroplasts. During this stage, light energy is absorbed by chlorophyll and converted into chemical energy in the form of ATP and NADPH, which are used in the next stage of photosynthesis to produce glucose.
The source of electrons in photosynthesis is water. Water molecules are split during the light-dependent reactions of photosynthesis, releasing oxygen and electrons that are used to drive the production of ATP and NADPH.
The hydrogen atoms in glucose come from water molecules during photosynthesis. During this process, plants take in carbon dioxide and water, and through a series of reactions, convert them into glucose and oxygen. The hydrogen atoms from water molecules are incorporated into the glucose molecule.
NADPH and ATP
Oxygen is used where as in photo-respiration Carbon dioxide is used. Oxygen used in photosynthesis comes out as carbon dioxide as a bi-product.
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The hydrogen atoms in the water molecule are used during photosynthesis. Water molecules are split into oxygen, protons, and electrons during the light-dependent reactions in photosynthesis.
Photosynthesis.
The water used in photosynthesis is split into oxygen and hydrogen ions. The oxygen is released into the atmosphere, while the hydrogen ions are used to produce energy in the form of ATP and NADPH that the plant can use to make glucose.
In leaves, carbon dioxide is used in photosynthesis to produce glucose, which serves as energy for the plant. Hydrogen is used in the synthesis of carbohydrates and other molecules, while oxygen is a byproduct of photosynthesis and is released into the atmosphere.
The two main reactions in photosynthesis are the light-dependent reactions and the light-independent reactions (Calvin cycle). In the light-dependent reactions, light energy is used to convert water into ATP and NADPH. In the light-independent reactions, ATP and NADPH are used to convert carbon dioxide into glucose.