Question # 1

Who used the term enzyme first time?

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Oscar Hertwing

Winhelm kuhne

W-Flemming

T.H.Morgan

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

An enzyme, which breaks down starch is:

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Protease

Amylase

Tripsn

Lipase

The first step in the cycle of an enzyme is;

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Substrate binds to enzyme

Substrate converted

Products released

Enzyme become free

The optimum temperature for human enzyme is between:

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10-20°C

20-35°C

35-40°C

5-10°C

To waht category of molecules do enzymes belong?

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Carbohydrates

Lipids

Nucleic acids

Proteins

Which enzyme breaks the peptide bods:

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Amylase

Protease

Lipase

None

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

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2 to 4

6 to 8

8 to 10

1 to 2

Which of the following variable is least likely to affect an enzymes rate of reaction?

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Temperature

pH

Carbon dioxide concentration

Enzyme concentration

When we add more substrate to an already occurring enzymatic reaction and there is no increase in the rate of reaction what would you predict?

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All active sites have been occupied by substrate molecules

The enzyme molecules have denatured

More substrate acted as inhibitor

More substrate has disturbed the pH of the medium

Which one of the following is specific in action ?

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Catalyst

Enzyme

Both

None

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