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Question-1
The pairing of nitrogenous bases is such that thymine always pairs with:
(A)
Adenine
(B)
Guanine
(C)
Uracil
(D)
Cytosine
Question-2
The uneven distribution of charge on the molecule is referred to as:
(A)
Bipolar group
(B)
Dipole
(C)
Unipole
(D)
Multipole
Question-3
How is glucose similar to water in its dipole nature?
(A)
It has H
2
and O
2
molecules .
(B)
Glucose is soluble in water.
(C)
Both have the same density.
(D)
Oxygen atom attract electrons which are shared with the hydrogen atoms more strongly.
Question-4
Name the protein in the hair.
(A)
Keratin
(B)
Globin
(C)
Melanin
(D)
Fibroin
Question-5
The density of water is:
(A)
Less than the density of aquatic organisms body fluid
(B)
Grater than the density of aquatic organisms body fluid
(C)
Same as the density of aquatic organisms body fluid
(D)
Change with the location of the water body
Question-6
How does the layer of ice on the surface of a water body helps the lower layer not to get frozen during winter?
(A)
Ice blocks suns rays
(B)
Ice is a conductor of heat
(C)
Ice is an insulator of heat
(D)
Ice do not allow other water molecules to change their state
Question-7
Which of these is an organic alcohol having 3 carbon atoms?
(A)
Glycerol
(B)
Triglyceraldehyde
(C)
Triose
(D)
Acetic acid
Question-8
The sequence of nitrogen bases of which strand/strands determine the order of amino acids of a polypeptide chain?
(A)
Both strands
(B)
Sense strand
(C)
Nonsense strand
(D)
5' 3' strand
Question-9
Latent heat of vaporisation in sweating and transpiration is gained from:
(A)
Water itself
(B)
Atmosphere
(C)
Body of organism itself
(D)
Energy source like sun
Question-10
The non protein part of haemoglobin which consists of four haem groups.
(A)
Alpha group
(B)
Carboxylic group
(C)
Amino group
(D)
Prosthetic group
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Cambridge Advanced Grade 12
IGCSE
Practice in Related Chapters
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Transport in Mammals
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