51. The bases Adenine and Thymine are paired with
a. Double hydrogen bonds
b. Single hydrogen bonds
c. Triple hydrogen bonds
d. Both b and c
Ans: A
52. The no. of hydrogen bonds existing between Guanine and Cytosine are
a. 5
b. 2
c. 3
d. None of these
Ans: C
53. The length of each coil in DNA strand is
a. 15 Ao
b. 34 Ao
c. 30 Ao
d. 5 Ao
Ans: B
54. Nucleic acids are highly charged polymers due to
a. There is phosphodiester bond between 5’- hydroxyl of one ribose and 3’–hydroxyl of next ribose
b. They have positive and negative ends
c. Nucleotides are charged structures
d. Nitrogenous bases are highly ionized compounds
Ans: A
55. The best studied example for specialized transduction is
a. P1 phage
b. P22 phage
c. ë-phage
d. Both a and c
Ans: C
56. The diagrammatic representation of the total no. of genes in DNA is
a. Genome
b. Gene map
c. Gene-structure
d. Chromatin
Ans: B
57. During specialized transduction
a. Large amound of DNA is transferred
b. A few no. of genes are transferred
c. Whole DNA is transferred
d. None of these
Ans: B
58. The cell donating DNA during transformation is
a. Endogenate
b. Exogenate
c. Mesozygote
d. Merosite
Ans: B
59. Genetic information transfer DNA to RNA is called –
a. Transcriptase
b. Transduction
c. Transformation
d. Recombination
Ans: A
60. The gene transfer occurs by –
a. Transformation
b. Transduction
c. Conjugation
d. Cell fusion
Ans: A
a. Double hydrogen bonds
b. Single hydrogen bonds
c. Triple hydrogen bonds
d. Both b and c
Ans: A
52. The no. of hydrogen bonds existing between Guanine and Cytosine are
a. 5
b. 2
c. 3
d. None of these
Ans: C
53. The length of each coil in DNA strand is
a. 15 Ao
b. 34 Ao
c. 30 Ao
d. 5 Ao
Ans: B
54. Nucleic acids are highly charged polymers due to
a. There is phosphodiester bond between 5’- hydroxyl of one ribose and 3’–hydroxyl of next ribose
b. They have positive and negative ends
c. Nucleotides are charged structures
d. Nitrogenous bases are highly ionized compounds
Ans: A
55. The best studied example for specialized transduction is
a. P1 phage
b. P22 phage
c. ë-phage
d. Both a and c
Ans: C
56. The diagrammatic representation of the total no. of genes in DNA is
a. Genome
b. Gene map
c. Gene-structure
d. Chromatin
Ans: B
57. During specialized transduction
a. Large amound of DNA is transferred
b. A few no. of genes are transferred
c. Whole DNA is transferred
d. None of these
Ans: B
58. The cell donating DNA during transformation is
a. Endogenate
b. Exogenate
c. Mesozygote
d. Merosite
Ans: B
59. Genetic information transfer DNA to RNA is called –
a. Transcriptase
b. Transduction
c. Transformation
d. Recombination
Ans: A
60. The gene transfer occurs by –
a. Transformation
b. Transduction
c. Conjugation
d. Cell fusion
Ans: A
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