Question # 1

Which one of the following statements about enzymes is not true

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They consist of proteins or without a non-proteins part

They change the rate of catalyzed reaction

They are sensitive to heat

They are non-specific in their action

The detachable cofactors of an enzyme is known as.

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Prosthetic group

Apo enzyme

Activator

Co enzyme

The reversible inhibitors usually constitute

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Strong linkage with enzyme

Weak linkage with enzyme

No Linage with enzyme

medium linkage

Metals is ions are related to.

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Co enzymes

Vitamins

Co factors

Substrate

The detachable co factor of an enzyme is known as

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Co enzyme

Ap enzyme

Activator

Prosthetic group

The optimum pH of pancreatic Lipase is

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7.00

9.00

6.40

5.20

Emil Fisher proposed a lock and key model in

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1990

1880

1890

1800

The rate of an enzyme catalyzed reaction

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Is constant under condition

Decreases as substrate concentration increases

Cannot be measured

Can be reduced by inhibitors

Optimum pH for action of pancreatic lipase is

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3.00

5.00

7.00

9.00

The enzyme with optimum pH = 7.60 is

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Arginase

Enterokinase

Catalase

Sucrase

Enzymes involved in respiration, are found in.

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Chloroplasts

Ribosome

Mitochondria

Nucleus

The optimum pH of catalase is

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6.60

7.60

8.60

9.60

An enzyme is said to be denatured when

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It has no co-factor

It is in a condition of low temperature

Its structure is destroyed

None of these

Co enzymes are closely related to.

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Amino acids

Vitamins

Enzyms

Non protein particles

The catalytic activity of an enzyme is restricted to its small protein called

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Active site

Passive site

Intermediate

Above all

Prosthetic group is

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Covalenty bonded non-protein part of an enzyme

Loosely bonded non-proteins part of an enzyme

Co-factor consists of metal ions

None of these

An activated enzyme made of polypeptide chain and a co-factor is

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Substrate

Co-enzyme

Apoenzyme

Holoenzyme

Induced fit model was proposed by.

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Emil Fischer

Pasteur

Jenner

Koshland

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