Which of the following is true?

1. Inorganic catalyst work efficiently at high temperatures and high pressures
2. Generally, enzymes get damaged at high temperatures
3. Thermostable enzymes retain their catalytic power even at high temperatures.
4. All of these

Subtopic:  Properties of Enzymes |
 96%
From NCERT
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Which of the following is correct?

1. Physical change refers to change in shape without breaking the bonds

2. Change in state of matter also takes place in physical change

3. Chemical change involves breaking of old bonds and formation of new ones.

4. All of these

Subtopic:  Mechanism of Enzymes |
 96%
From NCERT
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Which of the following is true?

1. Rate of physical or chemical process refers to the amount of product formed per unit time.

2. Rate can also be called as velocity of the reaction

3. Rate of reaction is influenced by temperature.

4. All of these

Subtopic:  Properties of Enzymes |
 97%
From NCERT
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Which of the following is true about carbonic anhydrase?

1. It accelerates the rate of  formation of carbonic acid by 10 million times.

2. In its absence only 200 molecules of carbonic acid is formed in an hour.

3. It forms 600,000 molecules  of carbonic acid in one second.

4. All of these

Subtopic:  Enzyme Introduction |
 95%
From NCERT
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Find the correct statement

1. Catalysed reactions proceed at rates higher than that of uncatalysed ones.

2. In skeletal muscle under anaerobic conditions lactic acid is formed from pyruvic acid.

3. In yeast during fermentation ethanol is formed from pyruvic acid.

4. All of these

Subtopic:  Enzyme Introduction |
 94%
From NCERT
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Which of the following is correct?

1. The chemical or metabolic conversion refers to a reaction.

2. The chemical which is converted into a product is called a substrate.

3. Proteins with three dimensional structures including an active site is called enzyme.

4. All of these

Subtopic:  Enzyme Introduction |
 96%
From NCERT
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Which of the following is incorrect?

1. The chemical or metabolic conversion refers to a reaction.

2. The chemical which is converted into a product is called an enzyme.

3. Proteins with three dimensional structures including an active site is called enzyme.

4. Enzymes convert a substrate into a product.

Subtopic:  Enzyme Introduction |
 84%
From NCERT
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Which of the following is incorrect?

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. Intermediates are highly stable.
Subtopic:  Mechanism of Enzymes |
 90%
From NCERT
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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 |
 79%
From NCERT
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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 Introduction |
 89%
From NCERT
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