2. The reaction: ATP to ADP + Pi releases 7.3 kcal/mol of energy. For each react

Question

2. The reaction: ATP to ADP + Pi releases 7.3 kcal/mol of energy. For each reaction indicate how much ATP the reaction would require or generate.

Requires 1ATP:
A. 1,3 biphosphoglycerate to glyceraldhyde 3-P
-12.5kcal/mol
B. Active transport of Na ion +9.4 k/cal/mol
C.Glucose to G-6-P
D. Creatine to creatine-P +11kcal/mol
E. PEP to pyruvate -14.8kcal/mol

Requires 2ATP:
A. 1,3 biphosphoglycerate to glyceraldhyde 3-P
-12.5kcal/mol
B. Active transport of Na ion +9.4 k/cal/mol
C.Glucose to G-6-P
D. Creatine to creatine-P +11kcal/mol
E. PEP to pyruvate -14.8kcal/mol

Generates 1ATP:
A. 1,3 biphosphoglycerate to glyceraldhyde 3-P
-12.5kcal/mol
B. Active transport of Na ion +9.4 k/cal/mol
C.Glucose to G-6-P
D. Creatine to creatine-P +11kcal/mol
E. PEP to pyruvate -14.8kcal/mo

Explanation / Answer

Requires 1 ATP:

C.Glucose to G-6-P

This is the first step of glycolysis. In this glucose is converted to glucose 6 phosphate by consuming 1 ATP in the presence of the enzyme hexokinase.

D. Creatine to creatine-P +11kcal/mol

The conversion of creatine to creatine phosphate requires an ATP as there is an addition of phosphate group to the creatine. The creatine phosphate formed is a high energy compound. The hydrlysis of this compound yields energy greater than 7.3 KCal/mole.

Requires 2ATP:

B. Active transport of Na ion +9.4 k/cal/mol

Active transport is a mechanism where the transport of molecules requires energy. This energy is obtained from ATP.

Generates 1ATP:

A. 1,3 biphosphoglycerate to glyceraldhyde 3-P -12.5kcal/mol

The seventh reaction of the glycolyis involves the conversion of 1,3-bisphosphoglycerate to glyceraldehyde-3-phosphate. This reaction takes place in the presence of the enzyme phosphoglycerokinase. In this reaction one ATP is released.

E. PEP to pyruvate -14.8kcal/mol

This is the last step of the glycolysis in which phosphoenolpyruvate is converted to pyruvate in the presence of the enzyme pyruvate kinase to release one ATP.

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