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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 structure of a protein molecule can be changed if the bonds which hold it in shape are broken. The process known as:
(A)
Deoxygenation
(B)
Denaturation
(C)
Decarboxylation
(D)
Dehydrogenation
Question-3
Density of water is maximum at:
(A)
4000
o
C
(B)
400
o
C
(C)
40
o
C
(D)
4
o
C
Question-4
A weak electrical attraction between a hydrogen in a molecule of water and an oxygen of another molecule of water is called as:
(A)
Hydrogen bond
(B)
Oxygen bond
(C)
Hydroxy bond
(D)
Water bond
Question-5
Which is NOT a feature of glucose?
(A)
Respiratory substrate
(B)
Our blood sugar
(C)
Disaccharide
(D)
Monomer molecules of the polymer, starch and cellulose
Question-6
Select the polysaccharides present in plants.
(A)
Glycogen and starch
(B)
Starch and cellulose
(C)
Glucose and sucrose
(D)
Sucrose and starch
Question-7
The feature which provides water the title universal solvent.
(A)
Viscosity of water
(B)
Density of water
(C)
Dipoles of water
(D)
Ionic nature of water
Question-8
Select the properties of polysaccharides.
(A)
Polymers of sugars
(B)
Bonds between sugar are glycosidic bonds
(C)
Starch and glycogen are polysaccharides
(D)
All polysaccharids are soluble in water
Question-9
Select the correct statement.
(A)
Heat and temperature are forms of energy
(B)
Heat is a kind of energy where as temperature is a measure of kinetic energy.
(C)
Both are kinetic movement, but in different units
(D)
Heat is the kinetic movement and temperature is a kind of energy
Question-10
The uneven distribution of charge on the molecule is referred to as:
(A)
Bipolar group
(B)
Dipole
(C)
Unipole
(D)
Multipole
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Cambridge Advanced Grade 12
IGCSE
Practice in Related Chapters
Transport in Plants
Regulations and Control
DNA and Protein Synthesis
The Molecules of Life
Photosynthesis and Plant Nutrition
Enzymes
Genetics
Cell
Cell Division
Ecology
Animal Nutrition
Reproduction in Animals
Gas Exchange
Evolution
Transport in Mammals
Respiration
Heterotrophic Nutrition
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