AP BIOLOGY

Detailed explanation-1: -The second half of glycolysis involves phosphorylation without ATP investment (step 6) and produces two NADH and four ATP molecules per glucose.

Detailed explanation-2: -Step 2: Phosphoglucose Isomerase Details: The second step of glycolysis involves the conversion of glucose-6-phosphate to fructose-6-phosphate (F6P). This reaction occurs with the help of the enzyme phosphoglucose isomerase (PI). As the name of the enzyme suggests, this reaction involves an isomerization reaction.

Detailed explanation-3: -Step 2 of glycolysis: In the second step of glycolysis, an isomerase catalyzes the conversion of glucose-6-phosphate into one of its isomers, fructose-6-phosphate. An isomerase is an enzyme that catalyzes the conversion of a molecule into one of its isomers.

Detailed explanation-4: -1, 3-bisphosphoglycerate is converted to 3-phosphoglycerate by phosphoglycerate kinase. This step converts an ADP to an ATP.