Question # 1

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

Activation energy is required to:

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Activation enzyme

Start a reaction

Speed up a reaction

None

metabolism is the some of the ................. proesses.

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Chemical

Physical

Both

None

The building units of enzymes are:

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Fatty acids

Glycerol

Nucleic acid

Amino acid

Non-protein part of enzymes are:

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Inhibitors

Substrate

Cofactors

Coenzymes

Prosthetic by all enzymes :

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Required by all enzymes

Loosely attached with enzymes

Proteins In nature

Tightly bound to enzyme

An enzyme, which breaks down starch is:

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Protease

Amylase

Tripsn

Lipase

Enzymes accelerate reactions by_______the activation energy needed for the reaction.

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Stopping

Raising

Lowering

Binding

Trypsin works at the PH of:

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2

4

8

6

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

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Organic

Inorganic

Both

None

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

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All actives sites have been occupied by substrate molecules

The enzyme molecule have denatured

More substrate acted as inhibitor

More substrate has disturbed has disturbed the pH of the medium

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

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2 to 4

6 to 8

8 to 10

1 to 2

There are about ............. to ........ enzymes in cell.

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1000-2000

1000-2050

2000-6000

2000-3000

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9th Class Biology Chapter 6 Enzymes English Medium KPK Boards Online Mcqs MCQs With Answers

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