Glycolysis takes place in the
Correct answer: C. cytoplasm
- A. matrix of the mitochondrion
- B. inner mitochondrial membrane
- C. cytoplasm
- D. nucleus
Explanation
Every enzyme of glycolysis is dissolved in the cytosol, which is why the pathway runs in prokaryotes and in red blood cells that have no mitochondria at all. The later stages, the link reaction and the Krebs cycle, are the ones confined to the mitochondrial matrix, and the electron transport chain is on the inner membrane. This is also why glycolysis can continue when oxygen is absent.
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About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
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