Consider the following statements:

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

Transition state structure of the substrate formed during an enzymatic reaction is

1. Transient but stable

2. Permanent but unstable

3. Transient but unstable

4. Permanent and stable

The substrate has to go through a much higher energy state or transition state in case of:

1. Exothermic reactions only

2. Endothermic reactions only

3. Both exothermic and endothermic reactions

4. Neither exothermic nor endothermic reactions

Which of the following describes the graph correctly?

(1) Endothermic reaction with energy A in the presence of enzyme and B in the absence of enzyme

(2) Exothermic reaction with energy A in the presence of enzyme and B in the absence of enzyme

(3) Endothermic reaction with energy A in the absence of enzyme and B in the presence of enzyme

(4) Exothermic reaction with energy A in the absence of enzyme and B in the presence of enzyme

Activation energy:
(1) Is the difference in the average energy content of 'S' from that of its transition state

(2) Helps to change reactants into unstable transition state before they can be converted into products

(3) Is minimum energy required from outside to overcome the energy barrier of reactant or to start a reaction

(4) All are correct

Which of the following is correct?

1.The ES complex formation is a transient phenomenon

2.The structure of the substrate gets transformed into the structure of product.

3.All the structures formed between substrate and product are called intermediates.

4.All of these

During catalytic cycle of an enzyme action the binding
of the __a__ induces the __b__ to alter its shape. Here
a and b is _________
1. Substrate, enzyme.
2. Enzyme, substrate.
3. Substrate, Substrate.
4. Enzyme, Enzyme

A. Catalyses the transfer of a group (other than hydrogen).
B. Catalyses removal group from substrates by mechanism other than hydrolysis leaving double bond
C. Catalyzing the linking of 2 molecules by using energy into one molecule.
Identify the classes of enzymes for above functions: