Chemiosmosis definitions Flashcards
Chemiosmosis definitions
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Chemiosmosis
Diffusion of ions across a semipermeable membrane, driven by a concentration gradient created by the electron transport chain. Electron Transport Chain
Series of redox reactions that build a hydrogen ion concentration gradient, ultimately powering ATP synthesis. Hydrogen Ion Concentration Gradient
Potential energy source created by the electron transport chain, with high concentration in the intermembrane space. ATP Synthase
Enzyme that facilitates chemiosmosis and synthesizes ATP by utilizing the hydrogen ion concentration gradient. Oxidative Phosphorylation
Process combining electron transport chain and chemiosmosis to produce ATP in aerobic respiration. NADH
Electron carrier that donates electrons to the electron transport chain, aiding in ATP production. FADH2
Electron carrier that transfers electrons to the electron transport chain, contributing to ATP synthesis. Intermembrane Space
Area where hydrogen ions accumulate, creating a concentration gradient for ATP production. Mitochondrial Matrix
Region of lower hydrogen ion concentration, where ATP synthase facilitates ATP production. Redox Reactions
Chemical reactions involving the transfer of electrons, crucial for the electron transport chain. Aerobic Cellular Respiration
Process of producing ATP using oxygen, involving oxidative phosphorylation and chemiosmosis. Phosphorylation
Addition of a phosphate group to ADP, forming ATP, powered by the hydrogen ion gradient. Oxygen Gas
Final electron acceptor in the electron transport chain, reacting to form water. Potential Energy
Stored energy in the hydrogen ion concentration gradient, used to power ATP synthesis. Semipermeable Membrane
Barrier allowing selective passage of ions, crucial for maintaining concentration gradients.
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