Question # 1

Collagen is a fibrous protein present most abundantly in

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heart

nucleus

connective tissues

Arteries

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

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

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^{Primary Structure}

Secondary Structure

Tertiary Structure

Quaternary Structure

The most complex strueture a single polypetide can assume is

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1° structure

2°structure

3° structure

4° 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

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

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Carbon

Hydrogen

Nitrogen

Sulphur

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

An example of bydrolase is

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Amylase

Lipase

Fumarase

A,C

Proteins have linkage between amino acids

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imide

amide

ester

ether

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

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Pepsin

Thrombin

Ptyalin

Fumarase

Enzymes are

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simple proteins

derived proteins

compound proteins

conjugated proteins

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

Increased concentration of enzyme alkaline phosphatase is a sign of

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hemophilia

heart disease

thrombosis

rickets

Enzymes consist of

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proteins only

proteins and non-protein parts

fats only

futs and non-fatty components

The most abundant protein in the human body is

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Collagen

Keratin

Myosin

Albumin

Enzymes have been classified on the basis of

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protein structure

prosthetic groups

type of reaction they catalyse

bonding in them

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 enzymes that catalyse the addition or removal of ammonia are:

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Lyases

Ligases

Transferases

Kinses

All are examples of different classes of enzymes except

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Hydrolases

Isomerases

Oxido-reductases

Mutases

More Classes

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