CELL RESPIRATION
GLYCOLYSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Energy payoff phase
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Energy power phase
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Energy saving phase
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Energy investment phase
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Detailed explanation-1: -The first stage of glycolysis involves an energy investment of two ATP. When studying metabolic pathways, pay attention to the name of the enzyme and what the enzyme did. Step 1: Glucose is phosphorylated by the enzyme hexokinase to form glucose 6-phosphate.
Detailed explanation-2: -In the first step of glycolysis, the glucose ring is phosphorylated. Phosphorylation is the process of adding a phosphate group to a molecule derived from ATP. As a result, at this point in glycolysis, 1 molecule of ATP has been consumed.
Detailed explanation-3: -This phase is known as the energy-requiring phase or the energy investment phase because energy in the form of ATP is needed in order to form the unstable fructose molecule from glucose.
Detailed explanation-4: -At the first step, D-glyceraldehyde 3-phosphate is catalyzed to glyceric acid 1, 3-biphosphate by glyceraldehyde-3-phosphate dehydrogenase with NAD, which also generate NADH. ATP is generated through the reaction that convert glyceric acid 1, 3-biphosphate to 3-phosphoglyceric acid.