Definitions for chemiosmosis
chemios·mo·sis

WiktionaryRate this definition:3.0 / 1 vote

1. chemiosmosisnoun

   Any chemical reaction that occurs through an intervening semipermeable membrane, especially through a membrane in a biological cell

WikipediaRate this definition:0.0 / 0 votes

1. Chemiosmosis

   Chemiosmosis is the movement of ions across a semipermeable membrane bound structure, down their electrochemical gradient. An important example is the formation of adenosine triphosphate (ATP) by the movement of hydrogen ions (H+) across a membrane during cellular respiration or photosynthesis. Hydrogen ions, or protons, will diffuse from a region of high proton concentration to a region of lower proton concentration, and an electrochemical concentration gradient of protons across a membrane can be harnessed to make ATP. This process is related to osmosis, the movement of water across a selective membrane, which is why it is called "chemiosmosis". ATP synthase is the enzyme that makes ATP by chemiosmosis. It allows protons to pass through the membrane and uses the free energy difference to phosphorylate adenosine diphosphate (ADP), making ATP. The generation of ATP by chemiosmosis occurs in mitochondria and chloroplasts, as well as in most bacteria and archaea. For instance, in chloroplasts during photosynthesis, an electron transport chain pumps H+ ions (protons) in the stroma (fluid) through the thylakoid membrane to the thylakoid spaces. The stored energy is used to photophosphorylate ADP, making ATP, as protons move through ATP synthase.

WikidataRate this definition:0.0 / 0 votes

1. Chemiosmosis

   Chemiosmosis is the movement of ions across a selectively permeable membrane, down their electrochemical gradient. More specifically, it relates to the generation of ATP by the movement of hydrogen ions across a membrane during cellular respiration. Hydrogen ions will diffuse from an area of high proton concentration to an area of lower proton concentration. Peter Mitchell proposed that an electrochemical concentration gradient of protons across a membrane could be harnessed to make ATP. He linked this process to osmosis, the diffusion of water across a membrane, which is why it is called chemiosmosis. ATP synthase is the enzyme that makes ATP by chemiosmosis. It allows protons to pass through the membrane and uses the kinetic energy to phosphorylate ADP, making ATP. The generation of ATP by chemiosmosis occurs in chloroplasts and mitochondria as well as in most bacteria and archaea.

How to pronounce chemiosmosis?

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How to say chemiosmosis in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of chemiosmosis in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of chemiosmosis in Pythagorean Numerology is: 3

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Chemiosmosis
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Chemiosmosis
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=chemiosmosis