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Chapter 15: Q24P (page 521)

Summarize the reactions of each stage of the pathway.

Short Answer

Expert verified

The pentose phosphate pathway has two stages: oxidative and non-oxidative. It results in the synthesis of NADPH, isomerization of pentoses, and recovery of glycolytic steps.

Step by step solution

01

Pentose Phosphate Pathway

The pentose phosphate pathway is a different technique for converting glucose into energy. Hexose monophosphate shunt is another name for this process. The pentose phosphate pathway occurs in the plastid (Plant cells).

The glycolysis, gluconeogenesis, and the Pentose Phosphate Pathwayare interconnected through several common or shared enzymes or intermediates.

02

Pictorial representation of Pentose Phosphate pathway

Hence, NADPH is created, pentoses are isomerized, and glycolytic intermediates are recovered in the pentose phosphate pathway.

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Most popular questions from this chapter

A proposed pathway for ascorbic acid (vitamin C) biosynthesis in plants takes the form.

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尝-驳补濒补肠迟辞蝉别-1-辫丑辞蝉辫丑补迟别鈫扦-驳补濒补肠迟辞蝉别鈫�

L-galactose-1,5-lactone鈫扡-ascorbic acid

Match each of the following enzymes to one of the pathway steps

  1. Galactose dehydrogenase
  2. GDP-mannose-3,5-epimerase
  3. Phosphoglucose isomerase
  4. Phosphomannoseisomerase
  5. Phosphomannose mutase

Describe the lengths of the products of the transketolase reaction when the two substrates are both five-carbon sugars.

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

Question: Under standard conditions, is the oxidation of free FADH2 by ubiquinone sufficiently exergonic to drive the synthesis of ATP?

Draw the enediolate intermediate of the ribulose-5-phosphate isomerase reaction (Ru5P 鈫� R5P).
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