Question # 1

The substance on which an enzyme act is called:

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Cofactor

Inhabitor

Coenzyme

Substrate

Coenzymes are small ................. molecules.

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Organic

Inorganic

Both

None

Anabolism constitute ................ processes.

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Construction

Destruction

Both a & b

None

Enzymatic reactions are _______ of times faster than uncatalyzed reactions:

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Millions

Hundreds

Thousands

Billion

The enzyme function between a PH of ..................... .

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2 to 4

6 to 8

8 to 10

1 to 2

Induced Fit model was proposed by:

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Emil Fischer

Melcher

Koshland

Saugeo

Almost all enzymes are:

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Carbohydrates

Fatty acids

Proteins

Vitamins

Enzymes are ............. catalysts.

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Inorganic

Organic

Both a & b

None

Which enzyme breaks the peptide bods:

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Amylase

Protease

Lipase

None

What is the effect of change in pH?

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Digradation of amino acids at active sites

Ionization of amino acids at active sites

Formation of new amino acids at active sites

All of these

When an enzyme is no longer able to work, it is said to be:

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Catalyzed

Dead

Cofactored

Denatured

Lock and key model was proposed by:

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Emil Fischer

Melcher

Koshland

Saugeo

The average temperature for human is ...............°C.

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35°C

36°C

37°C

38°C

Metabolism is of ............... types.

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1

2

3

4

Denaturation of enzyme is caused by:

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Increased pH

Decreased pH

Increases in temperature above optimum temperature

Decreases in temperature

Vitamin which acts as co-enzyme is:

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Vitamin A

Vitamin K

Riboflavin

All of these

Pepsin works at the PH of ............... .

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1

2

3

4

Activation energy is required to:

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Activation enzyme

Start a reaction

Speed up a reaction

None

All enzymes are composed of:

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Lipids

Carbohydrates

Proteins

Phosphates

Trypsin works at the PH of:

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2

4

8

6

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