1
MCQ (Single Correct Answer)
In a DNA strand the nucleotides are linked together by
A
glycosidic bonds
B
phosphodiester bonds
C
peptide bonds
D
hydrogen bonds
2
MCQ (Single Correct Answer)
A nucleoside differs from a nucleotide. It lacks the
A
base
B
sugar
C
phosphate group
D
hydroxyl group
3
MCQ (Single Correct Answer)
Both deoxyribose and ribose belong to a class of sugars called
A
trioses
B
hexoses
C
pentoses
D
polysaccharides
4
MCQ (Single Correct Answer)
The fact that a purine always paired base through hydrogen bonds with a pyrimidine base leads to, in the DNA double helix
A
the antiparallel nature
B
the semiconservative nature
C
uniform width throughout DNA
D
uniform length in all DNA
5
MCQ (Single Correct Answer)
The net electric charge on DNA and histones is
A
both positive
B
both negative
C
Both (a) and (b)
D
zero