Question # 1

The protein component of enzyme ls called

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apoenzyme

proenzyme

holoenyme

co-enzyme

Dehydrogenase is an erample of

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Transferase

Hydrolase

Lyase

Oxido-reductase

Increased concentration of enzyme alkaline phosphatase is a sign of

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hemophilia

heart disease

thrombosis

rickets

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

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 most complex strueture a single polypetide can assume is

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1° structure

2°structure

3° structure

4° structure

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

All are examples of different classes of enzymes except

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Hydrolases

Isomerases

Oxido-reductases

Mutases

The structure of protein helps protein to

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be in proper shape

attach substrate

perform is function

All of these

For a particular halogen, the reactivity of alkyl halides

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remains same with C-increase

decreases with C-increase

increases with C-increase

decreases with C-decrease

L-asparginase is helpful in treatment of

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skin disease

blood cancer

heart failure

obstructive jaundice

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

The enzymes that bring about exchange of functional groups like phosphate are called

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Ligases

Lyases

Isomerases

Transferases

Proteins have linkage between amino acids

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imide

amide

ester

ether

Fe+2 is the co-factor for

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Chrome oxidase

Glucose-6-phosphatase

Carbonic anhydrase

Hydrolase

Phosphoprotein comes under the type of proteins

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Simple protein

Derived protein

Conjugated

Both A & B

Dehydrogenase is an example of

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ligase

oxidoreductase

lyase

hydrolase

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 type of isomerism shown by alkyl halides is

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geometric

functional

positional

metamerism

Which of the following is the element not present in all proteins?

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Carbon

Hydrogen

Nitrogen

Sulphur

Succinic thiokinase is an enzyme of the type

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mutase

peroxidase

ligase

lyase

An example of regulatory protein is

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nucleoprotein

hemoglobin

lactoglobulin

thyroxine

Enzymes consist of

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proteins only

proteins and non-protein parts

fats only

futs and non-fatty components

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

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Lyases

Ligases

Transferases

Kinses

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

Proteins loose their ability to work

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by slight heating

by change in structure

by slight cooling

when inside the body

Collagen is a fibrous protein present most abundantly in

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heart

nucleus

connective tissues

Arteries

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

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