Question # 1

Lock and key 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

All enzymes are composed of:

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Lipids

Carbohydrates

Proteins

Phosphates

Prosthetic groups are:

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Required by all enzymes

Loosely attached with enzymes

Proteins in nature

Tightly bound to enzyme

Who used the term enzyme first time?

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Oscar Hertwing

Winhelm kuhne

W-Flemming

T.H.Morgan

Vitamin which acts as co-enzyme is:

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Vitamin A

Vitamin K

Riboflavin

All of these

The optimum temperature for human enzyme is between:

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10-20°C

20-35°C

35-40°C

5-10°C

Optimum temperature for enzymes of human body is:

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86°C

37°C

38°C

39°C

Enzymatic reactions are _______ of times faster than uncatalyzed reactions:

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Millions

Hundreds

Thousands

Billion

The bio-chemical reactions in which large molecules are synthesized is called:

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Anabolism

Catabolism

Metabolism

Enzymatic reaction

The molecule that fits the active sites that is called:

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Substrate

Enzyme

Catalyst

All

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

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2 to 4

6 to 8

8 to 10

1 to 2

What is true about cofactors?

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Break hydrogen bonds in proteins

Help facilitate enzyme activity

Increase activation energy

Are composed of proteins

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