Photosynthesis - Wikipedia
Photosynthesis changes sunlight into chemical energy, splits water to liberate O 2, and fixes CO 2 into sugar. Most photosynthetic organisms are photoautotrophs, which means that they are able to synthesize food directly from carbon dioxide and water using energy from light.
Photosynthesis | Definition, Formula, Process, Diagram, Reactants ...
2024年12月16日 · Photosynthesis is 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.
Photosynthesis - Definition, Equation and Products - Biology …
2017年7月30日 · Photosynthesis is the biochemical pathway which converts the energy of light into the bonds of glucose molecules. The process of photosynthesis occurs in two steps. In the first step, energy from light is stored in the bonds of adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH).
The Balanced Chemical Equation for Photosynthesis - ThoughtCo
2022年10月24日 · Learn how to write the overall chemical reaction for photosynthesis and explain the chemical process by which plants form glucose and oxygen.
9.2: Photosynthesis Overview and Equation - Biology LibreTexts
2024年11月26日 · Steps of Photosynthesis. Photosynthesis takes place in two sequential stages: the light-dependent reactions and the light independent-reactions (Calvin cycle).In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy.Light-dependent reactions require water and produce oxygen and energy in the form of ATP.
Photosynthesis: Equation, Steps, Process, Diagram - Microbe Notes
2023年8月3日 · Photosynthesis is a light-driven oxidation-reduction reaction where the energy from the light is used to oxidize water, releasing oxygen gas and hydrogen ions, followed by the transfer of electrons to carbon dioxide, reducing it to organic molecules.
10.2: The Light-dependent Reactions - Biology LibreTexts
2024年11月26日 · In photosynthesis, carotenoids function as photosynthetic pigments that are very efficient molecules for the disposal of excess energy. When a leaf is exposed to full sun, the light-dependent reactions are required to process an enormous amount of energy; if that energy is not handled properly, it can do significant damage.
Explainer: How photosynthesis works - Science News Explores
2020年10月28日 · Photosynthesis is the process of creating sugar and oxygen from carbon dioxide, water and sunlight. It happens through a long series of chemical reactions. But it can be summarized like this: Carbon dioxide, water and light go in. Glucose, water and oxygen come out.
Photosynthesis - Education | National Geographic Society
2024年6月21日 · During photosynthesis, plants take in carbon dioxide (CO 2) and water (H 2 O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.
How photosynthesis and its light and dark reactions work
Photosynthesis consists of a number of photochemical and enzymatic reactions. It occurs in two stages. During the light-dependent stage (“light” reactions), chlorophyll absorbs light energy, which excites some electrons in the pigment molecules to higher energy levels; these leave the chlorophyll and pass along a series of molecules ...