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Chapter 15: Q23CP. (page 518)

Write the net equation for the pentose phosphate pathway.

Short Answer

Expert verified

Glucose-6-phosphate + 2NADP + H20鈫�Ribose-5-phosphate + 2NADH + CO2 + 2H+

Step by step solution

01

Introduction.

The pentose phosphate pathway is a different pathway of converting glucose into energy. Hexose monophosphate shunt is another name for this process. In this pathway, glucose -6-phosphate is degraded to produce NADPH and pentoses.

The pathway comprises of two phases鈥攐xidative and non-oxidative phase.

02

Pentose Phosphate Pathway.

The overall reaction of Pentose phosphate pathway is shown below.

The net equation of Pentose Phosphate Pathway is:

Glucose-6-phosphate + 2NADP + H20 =>Ribose-5-phosphate + 2NADH + CO2 + 2H+

03

Conclusion.

Thus, NADPH, a biosynthetic reductant, and ribose-5-phosphate, a nucleotide synthesis precursor, are the end products.

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Most popular questions from this chapter

Which products of glycolysis are reduced molecules that the cell can oxidize to recover free energy?

Describe how fructose, galactose, and mannose enter the glycolytic pathway.

If a reaction has a 鈭咷掳藞 value of at least -30.5kJ mol-鹿, sufficient to drive the synthesis of ATP (鈭咷掳藞=30.5kJ mol-鹿), can it still drive the synthesis of ATP in vivo when its 鈭咷 is only -10kJ mol-鹿? Explain.

Arsenate (AsO鈧劼斥伝), a structural analog of phosphate, can act as a substrate for any reaction in which phosphate is a substrate. Arsenate esters, unlike phosphate esters, are kinetically as well as thermodynamically unstable and hydrolyze almost instantaneously. Write a balanced overall equation for the conversion of glucose to pyruvate in the presence of ATP, ADP, NAD鈦�, and either (a) phosphate or (b) arsenate. (c) Why is arsenate a poison?

How does phosphorylation differ between the kinase-catalyzed reactions and the reaction catalyzed by GAPDH?
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