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Question-1
Select the properties of polysaccharides.
(A)
Polymers of sugars
(B)
Bonds between sugar are glycosidic bonds.
(C)
Starch and glycogen are polysaccharides.
(D)
All polysaccharides are soluble in water.
Question-2
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-3
A particular length of DNA specifying the amino acid sequence for one polypeptide is called as a:
(A)
Genetic code
(B)
Codon
(C)
Sense strand
(D)
Gene
Question-4
The pairing of nitrogenous bases is such that thymine always pairs with:
(A)
Adenine
(B)
Guanine
(C)
Uracil
(D)
Cytosine
Question-5
The density of water is:
(A)
Less than the density of aquatic organisms body fluid
(B)
Greater 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
In a pond, during winter, the water freezes:
(A)
From top to bottom
(B)
Bottom to top
(C)
Unevenly
(D)
Whole water freeze together
Question-7
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-8
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-9
Amino acids are amphoteric because they have:
(A)
Only acidic property
(B)
Only basic property
(C)
Both acidic and basic property
(D)
No acidic or basic properties
Question-10
The structure of a protein molecule can be changed if the bonds which hold it in shape are broken; the process known is as:
(A)
Deoxygenation
(B)
Denaturation
(C)
Decarboxylation
(D)
Dehydrogenation
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Cambridge Advanced Grade 11
IGCSE
Practice in Related Chapters
The Molecules of Life
Regulations and Control
DNA and Protein Synthesis
Enzymes
Genetics
Cell
Cell Division
Photosynthesis And Plant Nutrition
Animal Nutrition
Reproduction in Animals
Ecology
Heterotrophic Nutrition
Gas Exchange
Evolution
Transport in Mammals
Transport in Plants
Respiration
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