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- Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH. In the process, water is used and oxygen is produced. Energy from ATP and NADPH are used to power the Calvin cycle, which produces GA3P from carbon dioxide. ATP is broken down to ADP and Pi, and NADPH is oxidized to NADP +.
bio.libretexts.org/Courses/Gettysburg_College/01:_Ecology_for_All/25:_Light_and_Photosynthesis
The light reactions of photosynthesis liberate oxygen, and more oxygen dissolves in the cytosol of the cell at higher temperatures. Therefore, high light intensities and high temperatures (above ~ 30°C) favor the second reaction and result in photorespiration.
- 8.6: The Light-Dependent Reactions of Photosynthesis ...
The overall function of light-dependent reactions, the first...
- 5.2: The Light-Dependent Reactions of Photosynthesis
In the light-dependent reactions, energy absorbed by...
- 8.6: The Light-Dependent Reactions of Photosynthesis ...
The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.
Sep 21, 2021 · In the light-dependent reactions, energy absorbed by sunlight is stored by two types of energy-carrier molecules: ATP and NADPH. The energy that these molecules carry is stored in a bond that holds a single atom to the molecule. For ATP, it is a phosphate atom, and for NADPH, it is a hydrogen atom.
The reactions that make up the process of photosynthesis can be divided into light-dependent reactions, which take place in the thylakoids, and light-independent reactions (also known as dark reactions or the Calvin cycle), which take place in the stroma.
The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem. Photosystems exist in the membranes of thylakoids. A pigment molecule in the photosystem absorbs one photon, a quantity or “packet” of light energy, at a time.
- Charles Molnar, Jane Gair
- 2015
Jul 6, 2024 · The light reactions of photosynthesis are the initial phase where light energy is captured and converted into chemical energy. This process takes place in the thylakoid membranes of the chloroplasts, where pigment molecules like chlorophyll absorb photons.
In the light-dependent reactions, energy absorbed by sunlight is stored by two types of energy-carrier molecules: ATP and NADPH. The energy that these molecules carry is stored in a bond that holds a single atom or group of atoms to the molecule.
