The hydrogen atoms removed from glucose during glycolysis are accepted by

  • A. NAD, forming NADH
  • B. oxygen directly
  • C. ATP
  • D. carbon dioxide

Explanation

NAD acts as the hydrogen acceptor in glycolysis, keeping the pathway going by removing electrons and carrying them onwards. Oxygen only accepts electrons at the very end of the chain, so it never takes hydrogen directly from glycolysis.

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