Photosynthesis | Definition, Formula, Process, Diagram, Reactants ...
2024年11月13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.
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 ...
Photosynthesis - Carbon Fixation, Reduction, Light | Britannica
2024年11月13日 · Photosynthesis - Carbon Fixation, Reduction, Light: The assimilation of carbon into organic compounds is the result of a complex series of enzymatically regulated chemical reactions—the dark reactions.
What is the basic formula for photosynthesis? | Britannica
The process of photosynthesis is commonly written as: 6CO 2 + 6H 2 O → C 6 H 12 O 6 + 6O 2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
photosynthesis - Kids | Britannica Kids | Homework Help
Photosynthesis requires sunlight, chlorophyll, water, and carbon dioxide gas. Chlorophyll is a substance in all green plants, especially in the leaves. Plants take in water from the soil and carbon dioxide from the air.
Photosynthesis - Electron Pathway, Chloroplasts, Light Reactions ...
2024年11月13日 · Photosynthesis - Electron Pathway, Chloroplasts, Light Reactions: The general features of a widely accepted mechanism for photoelectron transfer, in which two light reactions (light reaction I and light reaction II) occur during the transfer of electrons from water to carbon dioxide, were proposed by Robert Hill and Fay Bendall in 1960.
Photosynthesis - Carbon, Light, Oxygen | Britannica
2024年11月13日 · Included among the rate-limiting steps of the dark stage of photosynthesis are the chemical reactions by which organic compounds are formed by using carbon dioxide as a carbon source. The rates of these reactions can be increased somewhat by increasing the carbon dioxide concentration.
Photosynthesis - Proteins, Chloroplasts, Light | Britannica
2024年11月13日 · Photosynthesis - Proteins, Chloroplasts, Light: Many of the lamellar proteins are components of the chlorophyll–protein complexes described above. Other proteins include enzymes and protein-containing coenzymes. Enzymes are required as organic catalysts for specific reactions within the lamellae.
Algae - Photosynthesis, Pigments, Light | Britannica
2024年10月28日 · Photosynthesis comprises both light reactions and dark reactions (or Calvin cycle). During the dark reactions, carbon dioxide is bound to ribulose bisphosphate, a 5-carbon sugar with two attached phosphate groups, by the enzyme ribulose bisphosphate carboxylase.
chemical reaction - Students | Britannica Kids | Homework Help
Perhaps the most important of all chemical reactions is photosynthesis, which directly and indirectly supports almost every living thing on Earth. In photosynthesis, plants, algae, and certain microorganisms transform light energy from the Sun into the chemical energy of food.
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