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Which of the following describes the process of glycolysis?

  • A.It represents the first stage in the chemical oxidation of glucose by a cell.
  • B.Breakdown of glucose
  • C.Converts glucose to pyruvate
  • D.All the above

Answer: D

All the above describe glycolysis.

It is the first stage in the oxidation of glucose, and it breaks one molecule of glucose down to two of pyruvate: \[\mathrm{C_6H_{12}O_6 + 2NAD^+ + 2ADP + 2P_i \rightarrow 2\,CH_3COCOO^- + 2NADH + 2ATP + 2H^+ + 2H_2O}\] It takes place in the cytoplasm and needs no oxygen, which is why it is common to both aerobic and anaerobic respiration.

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