NCERT Biomolecules Objective Questions NTA NEET,Biology solutions,pdf

Biomolecules Mock Exam-1

Question No:1

Which elements are abundantly found in living organism in comparison to earth crust?

[A] Carbon
[B] Hydrogen
[C] Oxygen
[D] All



Question No:2

To analyze chemical composition of living tissue we solubilise them in

[A] HNO3
[B] HCl
[C] CF3COOH
[D] CCI3COOH



Question No:3

Percentage of oxygen in human body is

[A] 65%
[B] 46.60%
[C] 18.50%
[D] 3.30%



Question No:4

All the carbon compounds that we get from living tissues can be called

[A] bio-resource
[B] bio-informatics
[C] bio-war
[D] bio-molecules



Question No:5

Select the incorrect compounds that we get from living tissues can be called:

[A] Elemental analysis of living tissues gives elemental composition of living tissue
[B] Analysis of chemical compound of living tissue gives idea of organic and inorganic constituent of living tissue
[C] Weight of small amount of living fresh tissue is known as wet weight
[D] Acid soluble pool contain lipids, nucleic acid, polysaccharide only



Question No:6

The biomolecule whose weight is less than__ dalton (Da) is referred to as biomicromolecule.

[A] 800
[B] 18
[C] 1000
[D] 10,000



Question No:7

Which of the following is not a macromolecule?

[A] Nucleic acid
[B] Polysaccharides
[C] Lipids
[D] Proteins



Question No:8

Lipids are extracted with acid insoluble fraction because

[A] its molecular weight is less than 800 Da
[B] it form vesicle or micelle which are not water soluble
[C] it is polymer
[D] it is not a polymer



Question No:9

Select the incorrect matching for component % in living cell:

[A] Water – 70-90%
[B] Proteins – 10-15%
[C] Carbohydrate – 2%
[D] Nucleic Acid – 5-7%



Question No:10

………. of the total cell mass is formed by ions.

[A] 1%
[B] 2%
[C] 3%
[D] 4%



Question No:11

Monomeric unit of cellulose is

[A] glucose
[B] fructose
[C] mannose
[D] ribose



Question No:12

Monomeric unit of inulin is

[A] glucose
[B] fructose
[C] mannose
[D] ribose



Question No:13

Which of the following is homopolysaccharide?

[A] Cellulose
[B] Inulin
[C] Starch
[D] All



Question No:14

Starch forms helical………. structure that can hold………. molecule and gives blue colour,

[A] primary, I2
[B] secondary, I2
[C] tertiary, I2
[D] quaternary, I2



Question No:15

Select the incorrect statement from the following:

[A] Cellulose does not contain complex helices
[B] Cellulose does not give colour with I2
[C] Cotton fibre, plant cell wall are made up of cellulose
[D] Cellulose is heteropolysaccharide



Question No:16

Which of the following is amino-sugar?

[A] Glucosamine
[B] Galactosamine
[C] Both
[D] None



Question No:17

Chitinis

[A] homopolysaccharide
[B] heteropolysaccharide
[C] oligosaccharide
[D] monosaccharide



Question No:18

Chitin is present in

[A] exoskeleton of arthropods
[B] cell wall of fungus
[C] seate of earthworm
[D] all



Question No:19

In glycogen, which kind of linkage is found between adjacent glucose molecule?

[A] 1,4
[B] 1,6
[C] both
[D] 1,2



Question No:20

Which of the following is incorrect about glycogen?

[A] It is a stored form of glucose in animals
[B] In glycogen, right end is reducing and left end is non-reducing
[C] It is a branched polymer of glucose
[D] It is a stored form of glucose in plants