Asked by jj
where does cellular respiration take place
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Cellular respiration occurs inside cells. Where exactly depends on the organism and the step of respiration:
- Eukaryotes (animals, plants, fungi):
- Glycolysis: cytosol (cytoplasm)
- Pyruvate oxidation and the citric acid (Krebs) cycle: mitochondrial matrix
- Electron transport chain and oxidative phosphorylation: inner mitochondrial membrane (cristae)
- Prokaryotes (bacteria, archaea):
- Glycolysis and the citric acid cycle: cytoplasm
- Electron transport chain: plasma (cell) membrane
(If oxygen is absent, fermentation also occurs in the cytosol and yields much less ATP than aerobic respiration.)
- Eukaryotes (animals, plants, fungi):
- Glycolysis: cytosol (cytoplasm)
- Pyruvate oxidation and the citric acid (Krebs) cycle: mitochondrial matrix
- Electron transport chain and oxidative phosphorylation: inner mitochondrial membrane (cristae)
- Prokaryotes (bacteria, archaea):
- Glycolysis and the citric acid cycle: cytoplasm
- Electron transport chain: plasma (cell) membrane
(If oxygen is absent, fermentation also occurs in the cytosol and yields much less ATP than aerobic respiration.)
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