Question # 1

The detachable co factor of an enzyme is known as

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Co enzyme

Ap enzyme

Activator

Prosthetic group

Emil Fisher proposed a lock and key model in

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1990

1880

1890

1800

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

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Active site

Passive site

Intermediate

Above all

Irreversible inhibitors form which bonds active site.

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Hydrogen bonds

Covalent bonds

Ionic bonds

Hydrophobic bond

Optimum pH for sucrase is

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2.00

4.50

5.50

7.60

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

An enzyme with its co enzyme or prosthetic removed is designated as

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Activator

Co enzyme

Apo enzyme

Holoenzyme

The optimum pH of salivary amylase is.

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2.80

4.80

6.80

8.80

According to Lock and key model , the activate is.

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Soft structure

Flexible structure

Rigid structure

Attractive structure

An activated enzyme with a co enzyme is called.

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Apoenzymes

Activators

Holo enzymes

Co enzymes

The specificity of an enzyme is due to its

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Cofactor

Protein nature

Active site

Globular shape

The detachable cofactors of an enzyme is known as.

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Prosthetic group

Apo enzyme

Activator

Co enzyme

The raw material for co-enzymes are

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Lipids `

Proteins

Vitamins

None of these

The rate of reaction of enzyme directly depends upon

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Amount of enzyme present at a specific time at unlimited substrate concentration

Nature of substrate

Maximum pH level

Low temperature

Co enzymes are closely related to.

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Amino acids

Vitamins

Enzyms

Non protein particles

Lock and key model was proposed by

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Koshland

Emil Fisher

Watson

Flemming

Enzyme lower down the energy of.

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Kinetic

Potential

Activation

Ionic

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