Question # 1

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

Choose an answer

genetic

Regulatory

nucleo

structural

Fe+2 is the co-factor for

Choose an answer

Chrome oxidase

Glucose-6-phosphatase

Carbonic anhydrase

Hydrolase

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

Choose an answer

Urease

Zymase

Invertase

Sucrase

Lactoglobulin is found in

Choose an answer

nucleus

nerve cells

Plants only

muscles and in plants

All are examples of different classes of enzymes except

Choose an answer

Hydrolases

Isomerases

Oxido-reductases

Mutases

An example of simple protein is

Choose an answer

lipoprotein

Cholesterol

lecithin

globulin

The protein component of enzyme ls called

Choose an answer

apoenzyme

proenzyme

holoenyme

co-enzyme

The structure of protein helps protein to

Choose an answer

be in proper shape

attach substrate

perform is function

All of these

Helical structure of proteins is stabilized by

Choose an answer

Peptide bond

Dipeptide bond

Van der Wall's forces

Hydrogen bonding

For a particular halogen, the reactivity of alkyl halides

Choose an answer

remains same with C-increase

decreases with C-increase

increases with C-increase

decreases with C-decrease

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

Choose an answer

Co-factor

Isoenzyme

Prosthetic group

Substrate

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

Choose an answer

Lyases

Ligases

Transferases

Kinses

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

Choose an answer

Derived protein

Albumins

Conjugated simple protein

Conjugated protein

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

Choose an answer

2° structure

3°structure

1° structure

4° structure

UV rays inactivate enzymes because they

Choose an answer

change sequence of amino acids of enzymes

They add prosthetic group to them

They increase their specificity

affect structure of enzymes

Denaturation of proteins is often characterised by

Choose an answer

Loss of biological activity

Aiways being irreversible

Being ereater the lower the temperature

Changes in primary structure

Third order of protein structure refers to

Choose an answer

Bending of protein chain

Three-dimensional structure of protein

Number and sequence of amino acids

Site of disulphide bonds

Increased concentration of enzyme alkaline phosphatase is a sign of

Choose an answer

hemophilia

heart disease

thrombosis

rickets

Dehydrogenase is an erample of

Choose an answer

Transferase

Hydrolase

Lyase

Oxido-reductase

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

Choose an answer

Ligases

Lyases

Isomerases

Transferases

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

Choose an answer

^{Primary Structure}

Secondary Structure

Tertiary Structure

Quaternary Structure

Proteins have linkage between amino acids

Choose an answer

imide

amide

ester

ether

Prosthetic groups are

Choose an answer

helical structures in protein

sulphur containing parts of protein

non-protein parts in compound proteins

sites for hydrogen bonding

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

Choose an answer

addition of water

addition of ammonia

removal of ammonia

removal of water

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

Choose an answer

Simple proteins

Compound proteins

Derived proteins

All of the above

Proteins loose their ability to work

Choose an answer

by slight heating

by change in structure

by slight cooling

when inside the body

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

Choose an answer

Carbon

Hydrogen

Nitrogen

Sulphur

An example of regulatory protein is

Choose an answer

nucleoprotein

hemoglobin

lactoglobulin

thyroxine

More Classes

Other Links

MDCAT Chemistry Chapter 19 Macromolecules Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer