Study the reaction given below

CO2+H2OEnzymeH2CO3

In absence of any enzyme this reaction is very slow, with 200 molecules of H2CO3 formed in one hour. In presence of an enzyme the reaction speeds up dramatically with about 600,000 molecules formed every second. Name the enzyme which has accelerated up the reaction by 10 million times.

1. Ribozyme

2. Carbonic anhydrase

3. Catalase

4. Peroxidase

Subtopic:  Enzyme Inhibition |
 95%
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Which of the following set of coenzymes are nucleotides of vitamin niacin ?

1. NAD, NADP

2. FMN, FAD

3. ATP, ADP

4. ATP, FAD

Subtopic:  Enzyme Inhibition |
 94%
From NCERT
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Which of the following factor(s) do(es) not affect enzyme activity?

A. Temperature

B. pH

C. Enzyme concentration

D.Product concentration

E. Substrate concentration

F. Activation energy

1. C only

2. C & D

3. D only

4. F only

Subtopic:  Enzyme Inhibition |
From NCERT
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All enzymes are proteins except

1. Trypsin

2. Pepsin

3. Steapsin

4. Ribozyme and Ribonuclease-P

Subtopic:  Enzyme Catalysis |
 87%
From NCERT
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The 3' - 5' phosphodiester linkages inside polynudeotide chain serve to join

1. One DNA strand with the other DNA strand

2. One nucleoside with another nucleoside.

3. One nucleotide with another nucleotide

4. One nitrogenous base with pentose sugar

Subtopic:  Enzyme Catalysis |
 72%
From NCERT
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Chitin present in the exoskeletons of arthropods is

1. Protein

2. Polysaccharide

3. Lipid

4. Derived monosaccharide

Subtopic:  Introduction |
 87%
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Which of following is a secondary metabolits as well as a drug?

1. Concanavalin A

2. Vinblastine

3. Diterpenes

4. Ricin

Subtopic:  Introduction |
 79%
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Which of the following is the most abundant element present in human body?

1. Carbon

2. Hydrogen

3. Oxygen

4. Nitrogen

Subtopic:  Introduction |
 74%
From NCERT
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Which of the following secondary metabolites is a polymeric substance?

1. Ricin

2. Monoterpenes

3. Curcumin

4. Rubber

Subtopic:  Introduction |
 86%
From NCERT
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Which of the following is present in acid insoluble fraction?

1. Glucose

2. Fructose

3. Alanine

4. Lipid

Subtopic:  Introduction |
 90%
From NCERT
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