The figure given below shows the conversion of a substrate into product by an enzyme. In which one of the four options (1 - 4) the components of reaction labelled as A, B, C and D are identified correctly ?

A

B

C

D

1.

Potential

energy

Transition

state

Activation

Energy with enzyme

Activation energy with- out enzyme

2.

Transition

State

Potential

Energy

Activation

Energy with-out enzyme

Activation energy with enzyme

3.

Activation energy with-out enzyme

Transition state

Activation energy with enzyme

Potential energy

4.

Activation energy with enzyme

Transition state

Activation energy with-out enzyme

Potential energy

Subtopic:  Mechanism of Enzymes |
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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

Subtopic:  Mechanism of Enzymes |
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Which of the following is  not true for the graph?

1.The reaction is exothermic

2.The reaction is endothermic

3.The product is more stable than substrate

4.The difference in average energy content of substrate from that of transition state is called activation energy.

Subtopic:  Mechanism of Enzymes |
 80%
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The role of an enzyme in a reaction is to/as

1.Decrease activation energy

2.Increase activation energy

3.Inorganic catalyst

4.Increase potential energy

Subtopic:  Enzyme Catalysis |
 93%
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Transition state structure of the substrate formed during an enzymatic reaction is

1.transient but stable

2.permanent but unstable

3.transient and unstable

4.permanent and stable

Subtopic:  Enzyme Catalysis |
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Which of the following is correct for enzyme catalysed reaction?

1.Substrate is converted into Enzyme

2.Substrate is consumed in the reaction completely

3.Substrate is converted to product

4.Enzyme is converted to product

Subtopic:  Enzyme Catalysis |
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Which of the following is incorrect?

1.Enzymatic activity is maximum at its optimim pH and temperature.

2.Enzymatic activity declines both below and above the optimum value.

3.Low temperatures destroys enzymatic activity

4.High temperatures destroys enzymatic activity

Subtopic:  Properties of Enzymes |
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Which of the following destroys the Enzymatic activity?

1.high temperature

2.low temperature

3.pH

4.Both 2 and 3

Subtopic:  Properties of Enzymes |
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Which of the following factors can influence enzyme activity?

1. High temperature

2. pH

3. Substrate concentration

4. All of these

Subtopic:  Properties of Enzymes |
 95%
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The competitive inhibitor of enzyme succinic dehydrogenase is

1.succinate

2.malonate

3.malate

4.mannose

Subtopic:  Enzyme Inhibition: Introduction | Enzyme Inhibition |
 92%
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