Question 1

Refer to the reaction energy diagram provided. Which letter (a, b, c, d, or e) best represents the activation energy of the enzyme-catalyzed reaction?

Accepted Answer

b

Question 2

In the reaction energy diagram, which letter corresponds to the change in free energy ($$\Delta G) $$for the reaction from reactants (A + B) to products (C + D)?

Accepted Answer

d

Question 3

Based on the diagram, what does the difference between the highest point of the uncatalyzed reaction curve and the reactants (A + B) represent?

Accepted Answer

The activation energy without enzyme

Question 4

If the enzyme is denatured, which curve (higher or lower) would represent the reaction pathway?

Accepted Answer

The higher curve

Question 5

Which letter in the diagram represents the total energy released by the reaction (from reactants to products)?

Accepted Answer

d

Question 6

What would happen to the value of 'b' if a competitive inhibitor was present in the reaction?

Accepted Answer

It would increase

Question 7

Which part of the diagram (a, b, c, d, or e) would be most affected by the presence of a noncompetitive inhibitor?

Accepted Answer

b

Question 8

If the reaction shown is exergonic, which of the following is true about the relative energy levels of A + B and C + D?

Accepted Answer

A + B have higher free energy than C + D

Question 9

Which letter in the diagram would be the same for both the catalyzed and uncatalyzed reactions?

Accepted Answer

d

Question 10

If the enzyme concentration is increased, what effect would you expect on the height of the lower curve (enzyme-catalyzed pathway)?

Accepted Answer

It would remain the same

Study Guidance for Enzyme-Catalyzed Reactions and Energy Diagrams

스터디 가이드 - 연습 문제

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