Which is the most likely regulated step in the metabolic pathways? A. The first

ID: 712594 • Letter: W

Question

Which is the most likely regulated step in the metabolic pathways?

A. The first reaction in the pathway, regardless of whether it is reversible or irreversible.

B. The first irreversible reaction of the pathway.

C. The first endergonic reaction in the pathway.

D. The last reaction of the pathway.

E. The reaction whose enzyme is present in the highest activity in the cell.

Which of the following reaction will proceed favorably?

A. positive delta G prime

B. negative delta G prime

C. pH=-log of [H+]

D. AMP + 2Pi --> ATP

E. None of these

Why is ethanol, in the presence of NAD+, easily converted into acetaldehyde and NADH + H+?

A. It has a delta G prime= + 5.5 kcal/mol

B. Acetaldehyde is rapidly converted to acetate (delta G prime= -12.9 kcal/mol)

C. The NADH+ H+ concentration is typically very high in the cell/

D. The answer is unknown to science

1. most likely regulated step in the metabolic pathways

B. The first irreversible reaction of the pathway and E. The reaction whose enzyme is present in the highest activity in the cell.

2. reaction will proceed favorably on- B. negative delta G prime

3.Why is ethanol, in the presence of NAD+, easily converted into acetaldehyde and NADH + H+ because

B. Acetaldehyde is rapidly converted to acetate (delta G prime= -12.9 kcal/mol)

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