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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

What compounds with high phosphate group-transfer potential are synthesized during glycolysis?

The pyruvate 鈫� lactate reaction in animals is reversible, but the pyruvate 鈫� ethanol fermentation in yeast is irreversible. Explain.

Describe the products of the transketolase reaction when the substrates are a five-carbon aldose and a six-carbon ketose. Does it matter which of the substrates binds to the enzyme first?

The half-reactions involved in the lactate dehydrogenase (LDH) reaction and their standard reduction potentials are

Pyruvate +2H鈦�+2e鈦烩啋Lactate

狈础顿鈦�+2贬鈦�+2别鈦烩啋狈础顿贬+贬鈦�

Calculate 鈭咷 at pH 7.0 for the LDH-catalyzed reduction of pyruvate under the following conditions:

  1. [lactate]/[pyruvate]=1 and [NAD鈦篯/[NADH]=1
  2. [lactate]/[pyruvate]=160 and [NAD鈦篯/[NADH]=160
  3. [lactate]/[pyruvate]=1000 and [NAD鈦篯/[NADH]=1000
  4. Discuss the effect of the concentration ratios in Parts a-c on the direction of the reaction.

Question: How many ATP are invested and how many are recovered from each molecule of glucose that follows the glycolytic pathway?
See all solutions

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