Select Question Set:
Q. No.Heterochromatin
1. Is transcriptionally active
2. Is densely packed
3. Replicated during early S-phase
4. Stains lightly
Subtopic: DNA Packaging |
90%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The number of glycosidic bonds associated with DNA of diploid human cell are
1. \(6.6 \times 10^9\)
2. \(2 \times 6.6 \times 10^9\)
3. \(3.3 \times 10^9 \)
4. \(3.3 \times 10^9-2\)
1. \(6.6 \times 10^9\)
2. \(2 \times 6.6 \times 10^9\)
3. \(3.3 \times 10^9 \)
4. \(3.3 \times 10^9-2\)
Subtopic: DNA Double Helix |
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following does not confer stability to the helical structure of DNA?
1. Phosphodiester bond
2. H-bond
3. N-glycosidic linkage
4. Both (1) & (2)
1. Phosphodiester bond
2. H-bond
3. N-glycosidic linkage
4. Both (1) & (2)
55%
Please attempt this question first.
Hints
Which of the following type of bacteria were used in Griffith's transformation experiment?
1. Diplococcus, R-lll and S-ll type
2. Pneumococcus, T2 phage
3. Streptococcus, R-ll and S-lll type
4. Diplococcus, E coli
1. Diplococcus, R-lll and S-ll type
2. Pneumococcus, T2 phage
3. Streptococcus, R-ll and S-lll type
4. Diplococcus, E coli
72%
Please attempt this question first.
Hints
The biochemical nature of transforming principle was defined by
1. Griffith
2. Avery, Macleod, McCarty
3. Watson and Crick
4. Taylor
1. Griffith
2. Avery, Macleod, McCarty
3. Watson and Crick
4. Taylor
73%
Please attempt this question first.
Hints
In Hershey and Chase experiment, the protein of T2 phage was radioactive by using
1. S32
2. P31
3. S35
4. P32
1. S32
2. P31
3. S35
4. P32
57%
Please attempt this question first.
Hints
Choose the correct option w.r.t. RNA.
1. Presence of thymine in place of uracil
2. Absence of free 2'OH in sugar
3. Mutates at faster rate
4. Is non-catalytic
1. Presence of thymine in place of uracil
2. Absence of free 2'OH in sugar
3. Mutates at faster rate
4. Is non-catalytic
72%
Please attempt this question first.
Hints
Semiconservative DNA replication was proved by Messelson and Stahl, in which DNA was made
1. Radioactive using \(\mathrm{N}^{15}\)
2. Heavy using\(\mathrm{N}^{14}\)
3. Heavy using \({ }^{15} \mathrm{NH}_4 \mathrm{Cl}\)
4. Radioactive using \({ }^{14} \mathrm{NH}_4 \mathrm{Cl}\)
1. Radioactive using \(\mathrm{N}^{15}\)
2. Heavy using\(\mathrm{N}^{14}\)
3. Heavy using \({ }^{15} \mathrm{NH}_4 \mathrm{Cl}\)
4. Radioactive using \({ }^{14} \mathrm{NH}_4 \mathrm{Cl}\)
69%
Please attempt this question first.
Hints
During DNA replication, strand separation by breaking the H-bonds is performed by
1. DNA ligase
2. DNA polymerase
3. Helicases
4. RNA primase
1. DNA ligase
2. DNA polymerase
3. Helicases
4. RNA primase
71%
Please attempt this question first.
Hints
Which of the following acts as substrate as well as provide energy for DNA polymerisation?
1. Ribonucleoside
2. Deoxyribonucleoside
3. Ribonucleotide
4. Deoxyribonucleoside triphosphate
1. Ribonucleoside
2. Deoxyribonucleoside
3. Ribonucleotide
4. Deoxyribonucleoside triphosphate
73%
Please attempt this question first.
Hints
Select Question Set:
© 2024 GoodEd Technologies Pvt. Ltd.