Mature human red blood cells obtain all of their ATP from
- A. the Krebs cycle
- B. glycolysis alone
- C. oxidative phosphorylation
- D. the electron transport chain
Explanation
Red blood cells have no mitochondria, so they can only run glycolysis and produce lactate. Any answer involving the Krebs cycle or electron transport chain needs mitochondria, which mature erythrocytes throw away before entering the blood.
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