Question # 1

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

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Carbon

Hydrogen

Nitrogen

Sulphur

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 protein component of enzyme ls called

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apoenzyme

proenzyme

holoenyme

co-enzyme

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

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genetic

Regulatory

nucleo

structural

Dehydrogenase is an example of

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ligase

oxidoreductase

lyase

hydrolase

Alpha helix and beta pleated sheath are secondary structures of protein which are maintained by

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dipole forces

non-polar interactions

ionic bonds

Hydrogen bonds

In proteins, the alpha-helix and Beta-pleated sheet are examples of

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^{Primary Structure}

Secondary Structure

Tertiary Structure

Quaternary Structure

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

Amino acids react together to form the primary structure of proteins which is accompanied by

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addition of water

addition of ammonia

removal of ammonia

removal of water

All are examples of different classes of enzymes except

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Hydrolases

Isomerases

Oxido-reductases

Mutases

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

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Lyases

Ligases

Transferases

Kinses

Enzymes are

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simple proteins

derived proteins

compound proteins

conjugated proteins

Helical structure of proteins is stabilized by

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Peptide bond

Dipeptide bond

Van der Wall's forces

Hydrogen bonding

Increased concentration of enzyme alkaline phosphatase is a sign of

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hemophilia

heart disease

thrombosis

rickets

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

Fe+2 is the co-factor for

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Chrome oxidase

Glucose-6-phosphatase

Carbonic anhydrase

Hydrolase

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

Phosphoprotein comes under the type of proteins

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Simple protein

Derived protein

Conjugated

Both A & B

L-asparginase is helpful in treatment of

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skin disease

blood cancer

heart failure

obstructive jaundice

The type of isomerism shown by alkyl halides is

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geometric

functional

positional

metamerism

Dehydrogenase is an erample of

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Transferase

Hydrolase

Lyase

Oxido-reductase

The most complex strueture a single polypetide can assume is

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1° structure

2°structure

3° structure

4° structure

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

An example of simple protein is

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lipoprotein

Cholesterol

lecithin

globulin

Enzymes have been classified on the basis of

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protein structure

prosthetic groups

type of reaction they catalyse

bonding in them

An element that is not an essential par of proteins is

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O

N

H

S

An example of bydrolase is

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Amylase

Lipase

Fumarase

A,C

More Classes

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