Question # 1

An enzyme reacts only with its specific.

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Surface

Product

Substrate

Inhibitor

The reversible inhibitors usually constitute

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Strong linkage with enzyme

Weak linkage with enzyme

No Linage with enzyme

medium linkage

Enzyme that are integral part of ribosomes are involved in the synthsis of

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Lipids

Carbohydrates

Proteins

None of these

The optimum pH of catalase is

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6.60

7.60

8.60

9.60

If we add more substrate to already occurring enzymatic reaction and it has no effect on the rate of reaction, then what will be be the situation of the following

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Saturation

Denaturation

Composition

Inhibition

The enzyme with optimum pH = 7.60 is

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Arginase

Enterokinase

Catalase

Sucrase

An activated enzyme consisting of a polypodies chain and a co factor is called.

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Apo enzyme

Co enzymes

Holo enzymes

Both a and b

According to Lock and key model , the activate is.

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Soft structure

Flexible structure

Rigid structure

Attractive structure

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

Optimum pH for sucrase is

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2.00

4.50

5.50

7.60

The competitive inhibitor of succinic acid is.

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Fumaric acid

Malonic acid

Acetic acid

Citric acid

An activated enzyme with a co enzyme is called.

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Apoenzymes

Activators

Holo enzymes

Co enzymes

Lock and key model was proposed by

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Koshland

Emil Fisher

Watson

Flemming

Metals is ions are related to.

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Co enzymes

Vitamins

Co factors

Substrate

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 optimum pH of enzyme pepsin is

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2

6.8

7

9

Optimum pH for action of pancreatic lipase is

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3.00

5.00

7.00

9.00

Optimum pH value for enzyme pepsin is.

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4.50

9.00

2.00

5.50

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