During the preparatory, or energy investment phase of glycolysis, 2 ATP are hydrolyzed per molecule of glucose. During the payoff phase, 4 ATP are synthesized per molecule of glucose. The net yield is 2 ATP molecule per glucose.
The pyrurate is drawn in the question above - note that it is both a ketone and a carboxylate.
Phosphoenolpyruvate is unstable and has higher potential to transfer its phosphoryl group to ADP than 2-phosphoglycerate do.
This is a drag-n-drop question, the answers are shown above in the question.
The molecule is glucose-6-phosphate. It is formed by the action of the first enzyme in glycolysis, called hexokinase.
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