Question # 1

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

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

Dehydrogenase is an example of

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ligase

oxidoreductase

lyase

hydrolase

Which of the following bond is responsible for joining the amino acids in proteins?

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Metallic Bond

Di sulfide bond

Peptide Bond

Enzymes consist of

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proteins only

proteins and non-protein parts

fats only

futs and non-fatty components

An example of simple protein is

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lipoprotein

Cholesterol

lecithin

globulin

Proteins loose their ability to work

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by slight heating

by change in structure

by slight cooling

when inside the body

Abumins and globulins are defined as

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Derived protein

Conjugated protein

Fibrous protein

Simple Protein

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

An example of bydrolase is

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Amylase

Lipase

Fumarase

A,C

Increased concentration of enzyme alkaline phosphatase is a sign of

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hemophilia

heart disease

thrombosis

rickets

The most complex strueture a single polypetide can assume is

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1° structure

2°structure

3° structure

4° structure

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

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

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

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Urease

Zymase

Invertase

Sucrase

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

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genetic

Regulatory

nucleo

structural

Helical structure of proteins is stabilized by

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Peptide bond

Dipeptide bond

Van der Wall's forces

Hydrogen bonding

The protein component of enzyme ls called

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apoenzyme

proenzyme

holoenyme

co-enzyme

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

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

Phosphoprotein comes under the type of proteins

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Simple protein

Derived protein

Conjugated

Both A & B

The type of isomerism shown by alkyl halides is

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geometric

functional

positional

metamerism

All are examples of different classes of enzymes except

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Hydrolases

Isomerases

Oxido-reductases

Mutases

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

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Pepsin

Thrombin

Ptyalin

Fumarase

Dehydrogenase is an erample of

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Transferase

Hydrolase

Lyase

Oxido-reductase

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

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