CYCLIC PHOSPHORYLATION Meaning and
Definition
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Cyclic phosphorylation is a process that occurs during photosynthesis, specifically in the light-dependent reactions. It is a mechanism by which ATP, or adenosine triphosphate, molecules are generated through a series of cyclic electron transfers in the photosynthetic membrane.
During cyclic phosphorylation, light energy is absorbed by pigment molecules, such as chlorophyll, in the thylakoid membrane of the chloroplast. This excites electrons within these pigments, causing them to be transferred to electron acceptor molecules. These electrons then flow through a series of carrier molecules, including the cytochrome complex, before ultimately returning to the original pigment molecule.
As the electrons move through this cyclic pathway, they generate a proton gradient across the thylakoid membrane. This proton gradient is then used by the enzyme ATP synthase to generate ATP molecules. The electrons, after releasing their energy to generate ATP, return to the original pigment molecule, restarting the cycle.
Cyclic phosphorylation plays a crucial role in the production of ATP during photosynthesis. Unlike noncyclic phosphorylation, which generates both ATP and NADPH, cyclic phosphorylation exclusively produces ATP. This cyclic process ensures that adequate levels of ATP are available to meet the energy demands of the cell and maintain the overall efficiency of photosynthesis.
In summary, cyclic phosphorylation is a process that generates ATP through a cyclic flow of electrons in the thylakoid membrane during photosynthesis. This mechanism ensures a steady supply of ATP to support the various metabolic processes of the cell.
Common Misspellings for CYCLIC PHOSPHORYLATION
- xyclic phosphorylation
- vyclic phosphorylation
- fyclic phosphorylation
- dyclic phosphorylation
- ctclic phosphorylation
- cgclic phosphorylation
- chclic phosphorylation
- cuclic phosphorylation
- c7clic phosphorylation
- c6clic phosphorylation
- cyxlic phosphorylation
- cyvlic phosphorylation
- cyflic phosphorylation
- cydlic phosphorylation
- cyckic phosphorylation
- cycpic phosphorylation
- cycoic phosphorylation
- cycluc phosphorylation
- cycljc phosphorylation
- cyclkc phosphorylation
Etymology of CYCLIC PHOSPHORYLATION
The term "cyclic phosphorylation" includes two key words: "cyclic" and "phosphorylation".
1. "Cyclic" is derived from the Late Latin word "cyclicus", which came from the Greek word "kyklikos". "Kyklos" means "circle" or "cycle". In English, it refers to something that repeats in a cycle or follows a circular pattern.
2. "Phosphorylation" comes from the word "phosphate", which refers to an inorganic chemical compound containing the element phosphorus. The term "phosphate" is derived from the Greek word "phosphoros", which means "light-bringing". "Phosphorus" itself has its roots in the Greek word "phosphoros", linking back to the light-bringing quality of the element.
