Depending on the enzymes present in particular organisms, two common pathways fo

Question

Depending on the enzymes present in particular organisms, two common pathways for fermentation convert pyruvate to

a) lactate or ethanol

b) acetyl CoA or lactate

c) lactate or glucose

d) acetyl CoA or ethanol

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For the next four questions, refer to the diagram below substrate produets) STEP 1 glucose 6-phosphate ??? STEP2 OH ?? P OH, OH CHO P STEP 3 ?? HO OH ?? STEP 4 STEP5 phosphatetrlos triose phosphate g?yceraldehyde 3- STEP 6 H-C-OH dehydrogenase ,0 p STEP 7 1,0 P phosphoglycerate STEP8 iv STEP 9 '?? STEP 10 Hy The enzyme indicated by i is a) hexokinase. b) rubisco. c) glycogen branching enzyme d) glutamate-pyruvate transaminase e) malic enzyme. 81. 82. Compounds il and ill are, respectively a) xylulose-5-phosphate, ribose-5-phosphate b) fructose-1,6-bisphosphate, glucose-1,6-bisphosphate. c) sedoheptulose-1,7-bisphosphate, sedoheptulose-7-phosphate d) fructose-1,6-bisphosphate, glyceraldehyde-3-phosphate. e) ribulose-1,5-bisphoshpate, 3-phophoglycerate

Explanation / Answer

Depending on the enzymes present in particular organisms, two common pathways for fermentation convert pyruvate to:

A) Lactate or ethanol

81) The enzyme indicated by i is:

A) Hexokinase

82) Compound i and iii are respectively:

D) Fructose-1, 6-bisphosphate, glyceraldehydes-3-phosphate

83) Compound iv is:

D) 3-phosphoglycerate

84) Enzyme v is:

B) Pyruvate kinase

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