Question # 1

The average temperature for human is ...............°C.

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35°C

36°C

37°C

38°C

To waht category of molecules do enzymes belong?

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Carbohydrates

Lipids

Nucleic acids

Proteins

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

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

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Chemical

Physical

Both

None

Pepsin works at the PH of ............... .

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1

2

3

4

Enzymatic reactions are _______ of times faster than uncatalyzed reactions:

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Millions

Hundreds

Thousands

Billion

Which one of the following convert protein to amino acids?

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Protease

Lipase

Both

None

Beriberi can be produced by the lack of ......... .

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Vitamin A

Vitamin B

Vitamin BI

Vitamin C

Which enzyme works in stomach?

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Lipase

Trypsin

Pepsin

Amylase

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

Which one of the following convert lipids to fatty acids?

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Protease

Lipase

Both

None

Activation energy is required to:

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Activation enzyme

Start a reaction

Speed up a reaction

None

Enzymes accelerate reactions by_______the activation energy needed for the reaction.

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Stopping

Raising

Lowering

Binding

Enzymes are made up of ............. .

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protein

Carbohydrates

Lipids

Triglyceride

The bio-chemical reactions in which large molecules are synthesized is called:

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Anabolism

Catabolism

Metabolism

Enzymatic reaction

Vitamin which acts as co-enzyme is:

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Vitamin A

Vitamin K

Riboflavin

All of these

Which one of the following is specific in action ?

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Catalyst

Enzyme

Both

None

The building units of enzymes are:

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Fatty acids

Glycerol

Nucleic acid

Amino acid

The substance on which an enzyme act is called:

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Cofactor

Inhabitor

Coenzyme

Substrate

Lock and key model was proposed by ................. .

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Emil Fisher

Koshland

Freitz London

None

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