A.fructose-6-phosphate + ATP fructose-1,6-bisphosphate + ADP B.glucose + ATP glu

Question

A.fructose-6-phosphate + ATP fructose-1,6-bisphosphate + ADP

B.glucose + ATP glucose-6-phosphate + ADP

C.dihydroxyacetonephosphate glyceraldehyde-3-phosphate

D.glucose-6-phosphate fructose-6-phosphate

Part 2: Glycolytic reactions can either be described as reversible or irreversible. Looking at all 10 reactions in glycolysis, what conclusions can you make about irreversible reactions in general?

:A.They operate far from equilibrium.

B.The enzymes that catalyze these reactions are not shared in opposing
pathways (i.e., glycolysis and gluconeogenesis).

C.The activity of the enzymes that catalyze irreversible reactions can be increased
or decreased.

D.If the reaction involves ATP, it is an irreversible reaction.

Part 3:Which of the following are modified monosaccharides frequently found in glycoconjugates?

Choose one or more:

A.

B.

C.

D.

Explanation / Answer

Answer 1

A.

Because

Increased production of fructose-6-phosphate by the preceding enzymes in the glycolytic pathway does not increase the flux through this step, but instead leads to the accumulation of the substrate, fructose-6-phosphate. Thus PFK-1 functions as a valve, regulating the flow of carbon through glycolysis; increasing the activity of this enzyme (by allosteric activation, for example) increases the overall flux through the pathway

Answer 2

B. The enzymes that catalyze these reactions are not shared in opposingpathways (i.e., glycolysis and gluconeogenesis)

.because the irreversible steps of glycolysis are bypassed.different enzymes are involved.
biotin is required for gluconeogenesis and not for glycolysis.

Answer 3

B

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