CH 2: Biology MCQs
1)
All of the following are
insoluble in water except
a)
Cellulose b)
Glucose c)
Fats d)
Proteins
2)
Molecules which is unstable
and is the immediate source of energy.
a)
Amino acids b)
Glucose
c) Adensoine triphosphate d)
Fatty acid
3)
When 1 gram water is heated
from 15C to 16C heat absorbed is
a)
10 Calories b) 1 calorie c)
2 calories d)
5 calories
4)
Monosaccharide have
a)
Hydroxyle b)
Aldehyde group
c) Keto group d)
All of these
5)
The type of monosaccharide
rare in nature
a)
Triose b)
Tetroses c)
Pentoses d)
Hexoses
6)
Cane sugar is a
a)
Polysaccharide b)
Pligosaccharide
c) Monosaccharide d)
None of these
7)
Polysaccaride which give
red colour with iodine
a)
Cellulose b)
Glycogen c)
Starch d)
Chitin
8)
Character not found in
waxes
a)
Even no. of carbon
atoms b)
Have long chains alkanes
c) Protect plants from water loss d)
Water barrier substance
9)
Sanger determined the
structure of
a)
Hemoglobin b) Fibrin c)
Insulin d)
Keratin
10)
Quaternary structure is
found in
a)
Hemoglobin b) Insulin c)
Keratin d)
Fibrin
11)
Who isolated nuclic acid in
1870?
a)
F. Sanger b) W.
Ingram c) F. Miesher d) F. Franklin
12)
Substances found in
nucleoside
a)
Pentose sugar b)
Organic base
c) Phosphate d)
A and B
13)
What is percentage of
protein in mammalian cell, per total cell weight?
a)
12 b) 25 c) 18
d)
25
14)
What is the number of Amino
Acid in an insulin molecule?
a)
21 b) 30 c) 41
d)
51
15)
The shape of hemoglobin
molecule is like a
a)
Fiber b) Cigar
c) Globe d) Saucer
16)
The physical property of
monosaccaride is that they are
a)
Less sweet and less soluble
in water
b)
Sweet and less soluble in
water
c)
Sweet and easily soluble in
water
d)
Less sweet and insoluble in
water
17)
What does sucrose yield on
hydrolysis
a)
2 Monosaccharides b)
3 Monosaccharides
c) 4 Monosaccharides d)
5 Monosaccharides
18)
What are the reactants for
the formation of lactose?
a)
Glucose + Glucose b)
Glucose + Fructose
c) Glucose + Galactose d)
Fructose + Maltose
19)
There are three hydrogen
bonds in between different bases found in genetic
material
a)
Cytosine and Guanine b)
Adenine and Thymine
c) Adenine and Uracil d)
Thymine and Uracil
20)
Glycogen is chemically
a)
Monosaccharide b)
Disaccharide
c) Oligosaccharide d)
Polysaccharide
21)
A suitable example of
terpenoids is
a)
Sugar b)
Waxes c) Starches d)
Steroids
22)
In plant cell the excess of
glucose is converted into
a)
Cellulose b)
Galactose c)
Sucrose d)
Starch
23)
Cotton fiber is purely
a)
Galactose b)
Sucrose c)
Cellulose d)
Glucose
24)
In animals fatty acids are
in
a)
Branched chain b)
Straight chain
c) Ring
d)
None of these
25)
Oleic-acids is a common
example of
a)
Unsaturated fatty acid b)
Saturated fatty acid
c) Super saturated fatty acid d)
None of these
26)
Acylglycerols are
chemically composed of
a)
Glycerol and nucleic
acids b)
Glycerol and inorganic acids
c) Glycerol and fatty acids d)
Glycerol and amino acids
27)
DNA contains all the
following nitrogenous base units except
a)
Adenine b)
Gaunine c) Cytocine d) Uracil
28)
PGAL is a phosphorylated
form of a monosacaride sugar, it belongs to which group.
a)
Trioses b)
Tetroses c) Pentosses d)
Hexose
29)
Nucleic acids are in
different forms in the nucleus of a cell. Which of the following forms of
nucleic acids controls the synthesis of all these.
a)
DNA b) mRNA
c) tRNA
d) rNAa
30)
Carbohydrates in the cell
combine with protein and a resultant compound is called
a)
Glycolipids b) Glycoprotein c) Glycogenesis d) Glycolic
acid
31)
The general formula of
monosaccharides is
a)
(CH4O)n
b) (CH2O)n c) (CH3O)
d) (CHO)n
32)
Carbohydrates that are
comparatively less sweet in taste and less soluble in water are called
a)
Monosaccharides b)
Polysaccharides
c) Oligosaccharides d)
None
33)
Most familiar disaccharide
is
a)
Maltose b)
Sucrose c)
Lactose d)
None
34)
The main source of starch
is
a)
Grains b)
Seeds
c) Fruits and tubers d)
All of the above
35)
In which of the following
compounds, lipid is soluble
a)
Ether b) Alcohol
c) Chloroform d) All
of above
36)
The most widely spread
acylglycerole is
a)
Diacyglycerol b)
Triacyglycerol
c) Only acyglycerol d)
Tetra acylgycerol
37)
The basic unit of nucleic
acid is called
a)
Nucleoside b)
Nucleotide
c) Nitrogenous base d) Phosphoric
acid
38)
Nucleotides are united with
one another through
a)
Disulphide bridge b)
Phosphodiester linkage
c) Covalent bond d)
Ionic bond
39)
The two polynucleotide
strands are wound round each other. How many base pairs are there in each turn.
a)
5 base pair b)
15 base pairs
c) 10 base pairs d)
20 base pairs
40)
Which of the following RNA
carries genetic information from nucleus to cytoplasm.
a) tRNA
b) tRNA
c) mRNA
d) None
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