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Which of the following is true of glycolysis?

  1. Occurs only in anaerobic conditions

  2. Occurs in the presence of oxygen

  3. Produces pyruvate

  4. No ATP is produced

The correct answer is: Produces pyruvate

Glycolysis occurs in both anaerobic and aerobic conditions, so option A is incorrect. Option B is also incorrect because glycolysis can occur in the presence of oxygen, although it can also occur without oxygen. Option D is incorrect because ATP is produced during glycolysis. The correct answer is C because glycolysis produces pyruvate as one of its end products.