Mechanism of Enzyme Action

Q. Each enzyme can catalyse only a specific chemical reaction

1. True
2. False

Q. Which of the following representation shows the correct steps in catalytic reaction of an enzyme?

1. E + S $\to$ E + P
2. E + S $\to$ ES $\to$ E + P
3. E + S $\to$ EP $\to$ E + P
4. E + S $\to$ ES $\to$ EP $\to$ E + P

Q.
I. Segment representing the energy of activation
II. Segment representing the amount of free energy released by the reaction
III. Transition state

Which one is correct?

1. 1-II, 2-I, 3-III
2. 1-I, 2-II, 3-III
3. 1-III, 2-II, 3-I
4. 1-I, 2-III, 3-II