Pentose phosphate pathway (carbohydrate metabolism III)

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24 Terms

1
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the pentose phosphate pathway is a source of which two molecules?

NADPH and ribose 5 phosphate

2
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what are the two main roles of NADPH

antioxidant and biosynthesis

3
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is NADH involved in catabolism or anabolism?

catabolism

4
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is NADPH involved in catabolism or anabolism?

anabolism

5
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role of NADH

electron and hydrogen carrier

6
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what is NADH composed of?

nicotinamide, ribose, adenine and 2 phosphate groups

7
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what is NADPH composed of?

nicotinamide, ribose, adenine and 3 phosphate groups

8
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what are the 4 molecules involved in the oxidative phase of the PPP?

glucose 6 phosphate, 6 phosphoglucono delta lactone, 6 phosphogluconate and ribulose 5 phosphate

9
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name of the enzyme which converts glucose 6 phosphate to 6 phosphoglucono δ lactone

glucose 6 phosphate dehydrogenase

10
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name of the enzyme which converts 6 phosphoglucono δ lactone to 6 phosphogluconate

lactonase

11
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name of the enzyme which converts 6 phosphogluconate to ribulose 5 phosphate

6 phosphogluconate dehydrogenase

12
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what are the two possible products formed from ribulose 5 phosphate during the nonoxidative phase of the PPP

ribose 5 phosphate and xylulose 5 phosphate

13
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name of the enzyme which converts ribulose 5 phosphate to ribose 5 phosphate

ribose 5 phosphate isomerase

14
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name of the enzyme which converts ribulose 5 phosphate to xylulose 5 phosphate

ribulose 5 phosphate 3 epimerase

15
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what is the simplified reaction formula for nonoxidative PPP using only the number of carbons in compounds?

3C5 —>2C6+C3

16
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what are three C5 molecules used in nonoxidative PPP?

one ribose 5 phosphate and two xylulose 5 phosphate

17
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what are the two C6 and one C3 molecules which are the products of nonoxidative PPP?

two fructose 6 phosphate and one glyceraldehyde 3 phosphate

18
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names of two unfamiliar molecules in nonoxidative PPP

sedoheptulose 7 phosphate and erythrose 4 phosphate

19
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two trans enzymes used in nonoxidative PPP

transketolase and transaldolase

20
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24
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