Question # 1

Enzymes have been classified on the basis of

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protein structure

prosthetic groups

type of reaction they catalyse

bonding in them

The most abundant protein in the human body is

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Collagen

Keratin

Myosin

Albumin

The protein component of enzyme ls called

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apoenzyme

proenzyme

holoenyme

co-enzyme

Third order of protein structure refers to

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Bending of protein chain

Three-dimensional structure of protein

Number and sequence of amino acids

Site of disulphide bonds

Which of the following bond is responsible for joining the amino acids in proteins?

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Metallic Bond

Di sulfide bond

Peptide Bond

All are examples of different classes of enzymes except

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Hydrolases

Isomerases

Oxido-reductases

Mutases

Primar structure of proteins refers to

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Coling and folding in form of specilie structure

3d structure

Number of amino acids in a chain

Alpha and Beta sheets

L-asparginase is helpful in treatment of

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skin disease

blood cancer

heart failure

obstructive jaundice

The enzyme which is found in saliva, accelerates the conversion of starch into sugar is

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Pepsin

Thrombin

Ptyalin

Fumarase

Based on the physico-chemical properties, proteins may be classified into the following types

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Simple proteins

Compound proteins

Derived proteins

All of the above

The proteins which give an amino acid and non-protein group on hydrolysis are known as

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Derived protein

Albumins

Conjugated simple protein

Conjugated protein

Enzymes are

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simple proteins

derived proteins

compound proteins

conjugated proteins

Succinic thiokinase is an enzyme of the type

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mutase

peroxidase

ligase

lyase

Fe+2 is the co-factor for

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Chrome oxidase

Glucose-6-phosphatase

Carbonic anhydrase

Hydrolase

The specifie substance (metabolite) that fits on the enzyme surface and is converted to products is called

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Co-factor

Isoenzyme

Prosthetic group

Substrate

Enzymes consist of

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proteins only

proteins and non-protein parts

fats only

futs and non-fatty components

An example of simple protein is

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lipoprotein

Cholesterol

lecithin

globulin

Prosthetic groups are

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helical structures in protein

sulphur containing parts of protein

non-protein parts in compound proteins

sites for hydrogen bonding

Dehydrogenase is an erample of

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Transferase

Hydrolase

Lyase

Oxido-reductase

The enzymes that catalyse the addition or removal of ammonia are:

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Lyases

Ligases

Transferases

Kinses

Lactoglobulin is found in

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nucleus

nerve cells

Plants only

muscles and in plants

Collagen is a fibrous protein present most abundantly in

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heart

nucleus

connective tissues

Arteries

Which of the following is not a category of proteins based upon their function?

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genetic

Regulatory

nucleo

structural

Proteins loose their ability to work

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by slight heating

by change in structure

by slight cooling

when inside the body

The structure of protein helps protein to

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be in proper shape

attach substrate

perform is function

All of these

Abumins and globulins are defined as

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Derived protein

Conjugated protein

Fibrous protein

Simple Protein

Denaturation of proteins is often characterised by

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Loss of biological activity

Aiways being irreversible

Being ereater the lower the temperature

Changes in primary structure

Which of the following is not a property of enzymes?

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extraordinary speciffcity

reversibility of reactions

high efficiency

minimum activity at optimum T

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