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Question-1
Select the false statement.
(A)
Alpha glucose has an -OH group at carbon 1
(B)
Beta glucose has an -OH group at carbon 1
(C)
Alpha glucose has an -OH group down
(D)
Alpha glucose has -OH group up
Question-2
Which releases more energy?
(A)
Steroids
(B)
Triglycerides
(C)
Carbohydrates
(D)
Proteins
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
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-5
Milk sugar lactose is made up of :
(A)
Glucose and fructose
(B)
2 glucose molecules
(C)
2 fructose molecules
(D)
Glucose and galactose
Question-6
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-7
Cellulose is not easy to digest as starch since:
(A)
Links between beta glucose is not easy to break
(B)
Links between alpha glucose is not easy to break
(C)
It is a protein
(D)
It is a lipid.
Question-8
Which is true?
(A)
Blood and water have same viscosity
(B)
Water and ethanol have same viscosity
(C)
Water is less viscous than ethanol
(D)
Blood is less viscous than water
Question-9
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-10
A phospholipid molecule has:
(A)
2 hydrophilic ends
(B)
2 hydrophobic ends
(C)
One hydrophilic and 1 hydrophobic end
(D)
No hydrophobic and hydrophilic ends
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Cambridge Advanced Grade 12
IGCSE
Practice in Related Chapters
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Transport in Mammals
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