Which of the following is a result of glycolysis?

• A. A net gain of four ATP per one glucose molecule.
• B. Conversion of FAD to FADH₂.
• C. Conversion of one glucose molecule to two pyruvate molecules.
• D. Conversion of NADH to NAD⁺.

Answer: (C)

Verified step by step guidance

1. Understand that glycolysis is the process of breaking down one glucose molecule into two molecules of pyruvate, which occurs in the cytoplasm of the cell.
2. Recognize that glycolysis results in a net gain of two ATP molecules per glucose molecule, not four. This is because four ATP molecules are produced, but two are used during the process.
3. Identify that glycolysis involves the reduction of NAD+ to NADH, not the conversion of NADH to NAD+.
4. Note that FAD is not involved in glycolysis; it is part of the citric acid cycle and oxidative phosphorylation.
5. Conclude that the correct result of glycolysis is the conversion of one glucose molecule to two pyruvate molecules, along with a net gain of two ATP and the production of NADH.