Question # 1

An element that is not an essential par of proteins is

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O

N

H

S

Proteins have linkage between amino acids

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imide

amide

ester

ether

UV rays inactivate enzymes because they

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change sequence of amino acids of enzymes

They add prosthetic group to them

They increase their specificity

affect structure of enzymes

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

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^{Primary Structure}

Secondary Structure

Tertiary Structure

Quaternary Structure

Glucose is converted into ethanol by the enzyme present in the yeast

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Urease

Zymase

Invertase

Sucrase

Lactoglobulin is found in

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nucleus

nerve cells

Plants only

muscles and in plants

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

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Lyases

Ligases

Transferases

Kinses

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

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genetic

Regulatory

nucleo

structural

Abumins and globulins are defined as

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Derived protein

Conjugated protein

Fibrous protein

Simple Protein

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

L-asparginase is helpful in treatment of

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skin disease

blood cancer

heart failure

obstructive jaundice

An example of simple protein is

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lipoprotein

Cholesterol

lecithin

globulin

The most abundant protein in the human body is

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Collagen

Keratin

Myosin

Albumin

Succinic thiokinase is an enzyme of the type

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mutase

peroxidase

ligase

lyase

Enzymes have been classified on the basis of

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protein structure

prosthetic groups

type of reaction they catalyse

bonding in them

Enzymes consist of

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proteins only

proteins and non-protein parts

fats only

futs and non-fatty components

The type of isomerism shown by alkyl halides is

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geometric

functional

positional

metamerism

Helical structure of proteins is stabilized by

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Peptide bond

Dipeptide bond

Van der Wall's forces

Hydrogen bonding

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

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

The protein component of enzyme ls called

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apoenzyme

proenzyme

holoenyme

co-enzyme

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

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Pepsin

Thrombin

Ptyalin

Fumarase

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

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

Simplest Structure of a protein that has only covalent bonding between amino acids is

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2° structure

3°structure

1° structure

4° structure

The structure of protein helps protein to

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be in proper shape

attach substrate

perform is function

All of these

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

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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