Answer :
When one reaction or system drives another with the energy it produces, this is known as energy coupling. Chemiosmosis is the diffusion of ions across a membrane that is semi-permeable.
Chemiosmosis is the passage of ions down their electrochemical gradient over a structure bound to a semipermeable membrane. The production of adenosine triphosphate (ATP) by the passage of hydrogen ions (H+) across a membrane during photosynthesis or cellular respiration is a significant illustration.
When ions move through a channel, an ion gradient with potential energy can be employed to drive chemical reactions (red).
A gradient of protons' electrochemical concentrations across a membrane can be used to produce ATP. Hydrogen ions, or protons, will diffuse from a location of high proton concentration to a region of low proton concentration. The term "chemiosmosis" refers to a process that is similar to osmosis and involves the passage of water across a selective membrane.
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