Where does the Krebs cycle occur?
Correct answer: B. Mitochondrial matrix
- A. Cytoplasm
- B. Mitochondrial matrix
- C. Inner mitochondrial membrane
- D. Outer mitochondrial membrane
Explanation
The Krebs cycle (citric acid cycle) occurs in the mitochondrial matrix.
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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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