Exam 26: The Pentose Phosphate Pathway

Choose the correct answer from the list below. Not all of the answers will be used. -____________ results in a C3 and a C7 carbohydrate from two C5 carbohydrate precursors.

Which of the following reactions is not part of the pentose phosphate pathway?

Choose the correct answer from the list below. Not all of the answers will be used. -Excess carbons of the pentose phosphate pathway are shunted to what other metabolic pathway?

Under what conditions might the pentose phosphate pathway produce large amounts of NADPH without significant net production of ribose 5-phosphate?

Isomers with multiple asymmetric centers differing in only one asymmetric center is/are a(n) _________________.

In the nonoxidative stage of the pentose phosphate pathway, intermediates of _____________ are produced.

The oxidative phase of the pentose phosphate pathway produces _________________, which is required for lipid biosynthesis.

_________________ is the enzynme that catalyzes the hydrolysis of the ester linkage of the lactone, resulting in the ring opening.

Choose the correct answer from the list below. Not all of the answers will be used. -This is due to a loss in activity in which enzyme in red blood cells?

Glucose 6-phosphate dehydrogenase is inhibited by low levels of:

Choose the correct answer from the list below. Not all of the answers will be used. -The second phase of the pentose phosphate pathway is the ____________ phase.

The pentose phosphate pathway:

What is the common feature of the mechanism of the metabolic oxidations of 6-phosphogluconate and isocitrate?

______________ oxidizes the C3 hydroxyl to a ketone.

Choose the correct answer from the list below. Not all of the answers will be used. -____________ and transketolase are the enzymes that link glycolysis and the pentose phosphate pathway.

In the non-oxidative phase of the pentose phosphate pathway, two reactions are catalyzed by transketolase. What are the substrates and products of these reactions?

The purpose of the pentose phosphate pathway is to:

_________________ is converted to xylulose 5-phosphate by the enzyme phosphopentose epimerase.

Several physiological modes are possible for the metabolic need for NADPH, ribose 5-phosphate, and ATP. In one scenario, such as found in adipose tissue, much more NADPH is required than ribose 5-phosphate. How is this maintained?

How is the pentose phosphate pathway regulated?