Biomolecules Test

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Biomolecules Test - 9

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Weekly Quiz Competition

Question 1
1 / -0.25

The following molecule is called as?

A
Protein

B
Carbohydrate

C
Lipid

D
Vitamin

Solution

It is aldohexoses.
Question 2
1 / -0.25

D –ribose and 2 –deoxy –D –ribose are

A
hexose sugars

B
nucleic acids

C
vitamins

D
pentose sugars

Solution

They are pentose sugar
Question 3
1 / -0.25

The sugar constituent of DNA is.

A
D –2 –deoxy ribose

B
D –lactose

C
D –glucose

D
D –ribose

Solution

Sugar constituent of DNA is D-2-deoxy ribose.
Question 4
1 / -0.25

Protein is.

A
Condensation polymer

B
Copolymer

C
Addition polymer

D
Homopolymer

Solution

Protein is condensation polymer.
Question 5
1 / -0.25

Complete hydrolysis of RNA yields

A
a pentose sugar

B
nitrogen containing base

C
phosphoric acid

D
all of these

Solution

Complete hydrolysis of RNA yields a pentose sugar, phosphoric acid and nitrogeneous base.
Question 6
1 / -0.25

The spatial arrangement of the molecule is denoted by

A
D or L sign before the molecule

B
+ or –sign before the molecule

C
D⁺

D
L^–

Solution

D and L denotes configuration and D correctly represents the OH group is on RHS on 2nd last Carbon whereas L for LHS
"d "and "l "are used for dextro and laevo.
Hence A is correct.
Question 7
1 / -0.25

Choose the appropriate answer(s) for the below representation from the options given

A
Enantiomers

B
stereo isomers

C
dextro and levo rotatory molecules

D
All of these

Solution

They are, enatiomers as 1 is R, other is S. Therefore are stereo isomers. And dextro and levo.
Question 8
1 / -0.25

Protein is generally a polypeptide with _______ amino acid residues

A
150

B
50

C
70

D
>100

Solution

In protein more than 100 amino acids combine to form proteins
Question 9
1 / -0.25

Fibrous protein is.

A
Proteoses

B
Prolamine

C
Glycoprotein

D
Keratin

Solution

Keratin is fibrous protein
Question 10
1 / -0.25

The bond –CO –NH –is called

A
glycosidic linkage

B
disulphide linkage

C
peptide linkage

D
phosphodiester linkage

Solution

Peptide linkage is present in proteins formed by combination of amino acids.

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Biomolecules Test - 9

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Biomolecules Test - 9

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Question 1

Protein

Carbohydrate

Lipid

Vitamin

Solution

Question 2

hexose sugars

nucleic acids

vitamins

pentose sugars

Solution

Question 3

D –2 –deoxy ribose

D –lactose

D –glucose

D –ribose

Solution

Question 4

Condensation polymer

Copolymer

Addition polymer

Homopolymer

Solution

Question 5

a pentose sugar

nitrogen containing base

phosphoric acid

all of these

Solution

Question 6

D or L sign before the molecule

+ or –sign before the molecule

D+

L–

Solution

Question 7

Enantiomers

stereo isomers

dextro and levo rotatory molecules

All of these

Solution

Question 8

150

50

70

>100

Solution

Question 9

Proteoses

Prolamine

Glycoprotein

Keratin

Solution

Question 10

glycosidic linkage

disulphide linkage

peptide linkage

phosphodiester linkage

Solution

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