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Model of DNA
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Deoxyribonucleic Acid (DNA)
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What is the composition of the backbone of DNA?
A.
Alternating sugar and phosphate molecules
B.
Complementary base pairs
C.
Alternating sugar and base molecules
D.
A polysaccharide
Which of the following are connected by a hydrogen bond?
A.
The hydrogen and oxygen atoms of a water
molecule
B.
A base pair of a DNA molecule
C.
Two amino acid molecules of a dipeptide
D.
Two glucose molecules in a disaccharide
To which parts of the deoxyribose molecule do phosphates
bind in DNA?
A.
I and V
B.
III and IV
V
CH2 OH
I
C.
II and III
O
H
D.
III and V
IV
H
H
H
OH
II
OH
III
H
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Deoxyribonucleic Acid (DNA)
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Schematic of DNA
O
O P O
Base
O
CH2
O
Sugar
O
O P O
Base
O
CH2
O
Sugar
OH
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G
E
N
E
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