How many of the following statements regarding glycolysis are correct? A. Complete glycolysis of one molecule of sucrose yields a net gain of 4 molecules of ATP. B. Oxidation of one molecule of PGAL to BPGA yields one molecule of NADH + H ^+ . C. The gross production of ATP during glycolysis of one molecule of glucose is 2 molecules. D. Fructose enters the glycolytic pathway without the consumption of ATP.

Step-by-step solution

Statement A is correct: Sucrose is converted into one molecule of glucose and one molecule of fructose by the enzyme invertase. Both monosaccharides enter glycolysis, each yielding a net gain of 2 ATP molecules, resulting in a total net gain of 4 ATP molecules. Statement B is correct: The conversion of one molecule of 3-phosphoglyceraldehyde (PGAL) to 1,3-bisphosphoglycerate (BPGA) produces one molecule of NADH + H ^+ . Statement C is incorrect: The gross (total) production of ATP during glycolysis of one glucose m