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HomeHomework HelpbiologyChemiosmosis

Chemiosmosis

Chemiosmosis is the process by which adenosine triphosphate (ATP) is synthesized in cells through the movement of protons across a membrane, driven by an electrochemical gradient. This mechanism occurs in mitochondria during cellular respiration and in chloroplasts during photosynthesis.

intermediate
2 hours
Biology
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Overview

Chemiosmosis is a vital biological process that generates ATP, the energy currency of cells, through the movement of protons across a membrane. This process occurs in mitochondria during cellular respiration and in chloroplasts during photosynthesis, highlighting its importance in both energy produc...

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Key Terms

ATP
Adenosine triphosphate, the main energy carrier in cells.

Example: Cells use ATP to power muscle contractions.

Proton Gradient
A difference in proton concentration across a membrane.

Example: The proton gradient drives ATP synthesis in mitochondria.

ATP Synthase
An enzyme that synthesizes ATP using the energy from protons.

Example: ATP synthase is found in the inner mitochondrial membrane.

Electron Transport Chain
A series of proteins that transfer electrons and pump protons.

Example: The electron transport chain is crucial for aerobic respiration.

Oxidative Phosphorylation
The process of ATP production using the electron transport chain and chemiosmosis.

Example: Oxidative phosphorylation occurs in the mitochondria.

Cellular Respiration
The process by which cells convert glucose into energy.

Example: Cellular respiration includes glycolysis, the Krebs cycle, and chemiosmosis.

Related Topics

Cellular Respiration
The process by which cells convert glucose into energy, including glycolysis and the Krebs cycle.
intermediate
Photosynthesis
The process by which plants convert light energy into chemical energy, involving similar mechanisms to chemiosmosis.
intermediate
Metabolism
The set of life-sustaining chemical reactions in organisms, including energy production and utilization.
intermediate

Key Concepts

ATP synthesisproton gradientmembrane potentialoxidative phosphorylation