AP BIOLOGY

Detailed explanation-1: -Thus, a total of 4 ATPs are produced during glycolysis.

Detailed explanation-2: -One glucose molecule yields four ATP molecules in total during glycolysis. Since 2 ATP molecules are used up in the first phase of glycolysis, there is a net gain of 2 ATP molecules. In addition, glycolysis results in the production of 2 NADH molecules.

Detailed explanation-3: -Results of Glycolysis The energy to split glucose is provided by two molecules of ATP. As glycolysis proceeds, energy is released, and the energy is used to make four molecules of ATP.

Detailed explanation-4: -Step 4 of glycolysis: In the fourth step in glycolysis the enzyme Fructose-bisphosphate aldolase cleaves 1, 6-bisphosphate into two three-carbon isomers: dihydroxyacetone-phosphate and glyceraldehyde-3-phosphate.

Detailed explanation-5: -In the entire process of glycolysis, 2 NADPH molecules also formed. Each NADH produces 3ATP molecules that mean 6 ATP molecules in glycolysis are produced via NADPH. Therefore the total ATP molecules formed are 10ATP as 2ATPs used up in the initial steps, the net gain is 8 ATP molecules.