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14 Απρ 2022 · ATP can be produced when the passage of electrons along a series of proteins known as the electron transport chain releases energy for the phosphorylation of ADP. This process occurs in the mitochondria during respiration and in chloroplasts during 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.
Every time that the process of photosynthesis happens, it produces 1 molecule of oxygen along with the ATP and NADPH. However, only one molecule of oxygen is hardly anything compared to actual air space; much, much more must be produced to actually make a difference.
The production of ATP occurs through the process of photophosphorylation. When light energy hits the chlorophyll molecule, it is absorbed by photosystem I and photosystem II. This raises the energy levels of electrons within the photosystems, causing them to jump to higher energy levels.
Generating an Energy Carrier: ATP 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.
Photosynthesis takes place in two distinct stages. In the light reactions, energy from sunlight drives the synthesis of ATP and NADPH, coupled to the formation of O2 from H2O. In the dark reactions, so named because they do not require sunlight, the ATP and NADPH produced by the light reactions drive glucose synthesis.
6 ημέρες πριν · photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
