4) Which of the following metabolic enzymes uses GTP instead of ATP as the sourc
ID: 310481 • Letter: 4
Question
4)
Which of the following metabolic enzymes uses GTP instead of ATP as the source of phosphoryl transfer?
Glyceraldehyde dehydrogenase
None of the choices listed
Pyruvate carboxylase
PEP carboxykinase
Phosphoglycerate mutase
5)
During glycolysis, what is the logic behind phosphorylation of C1 and C6 of fructose?
More than one of these choices
None of the choices listed
Phosphorylation ensures that intermediates remain in the cell
Phosphorylation ensures that products of C-C bond cleavage are interconvertible
Phosphorylation ensures that two products are funneled into single pathway
a.Glyceraldehyde dehydrogenase
b.None of the choices listed
c.Pyruvate carboxylase
d.PEP carboxykinase
e.Phosphoglycerate mutase
Explanation / Answer
4)
-PEP carboxykinase uses GTP instead of ATP as the source of phosphoryl transfer.
5)
-Phosphorylation ensures that products of C-C bond cleavage are interconvertible.
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