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Q. No.In prokaryotes, DNA gyrase has _______ activity.
1. Exonuclease
2. Topoisomerase
3. Ligase
4. Polymerase
Subtopic: DNA Replication |
69%
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Untranslated regions are
1. Present at 5' end of mRNA after start codon
2. Not required for efficient translation process
3. Present at 3' end before stop codon
4. Present at both 5' and 3' end of mRNA.
1. Present at 5' end of mRNA after start codon
2. Not required for efficient translation process
3. Present at 3' end before stop codon
4. Present at both 5' and 3' end of mRNA.
Subtopic: Translation |
82%
From NCERT
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Statement A : During transcription a nucleic acid is copied form another nucleic acid.
Statement B : The primary transcripts contain both the exons and the introns and are non-functional.
1. Only statement A is correct
2. Only statement B is correct
3. Both statements A and B are correct
4. Both statements A and B are incorrect
Statement B : The primary transcripts contain both the exons and the introns and are non-functional.
1. Only statement A is correct
2. Only statement B is correct
3. Both statements A and B are correct
4. Both statements A and B are incorrect
Subtopic: Transcription |
75%
From NCERT
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If there are \(24 \times 10^8\) bp in an eukaryotic cell, then what will be the number of nucleosomes present in the nucleus?
1. \(12 \times 10^6 \)
2. \(12 \times 10^8\)
3. \(1.2 \times 10^8\)
4. \(2.4 \times 10^8 \)
1. \(12 \times 10^6 \)
2. \(12 \times 10^8\)
3. \(1.2 \times 10^8\)
4. \(2.4 \times 10^8 \)
60%
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Read the given statements and select the correct option.
Statement A : Prokaryotes have single origin of replication which is called ori-c in E.coli
Statement B : QB bacteriophage has RNA as their genetic material.
1. Only statement A is incorrect
2. Only statement B is incorrect
3. Both statements A and B are incorrect
4. Both statements A and B are correct
Statement A : Prokaryotes have single origin of replication which is called ori-c in E.coli
Statement B : QB bacteriophage has RNA as their genetic material.
1. Only statement A is incorrect
2. Only statement B is incorrect
3. Both statements A and B are incorrect
4. Both statements A and B are correct
66%
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Haploid content of human DNA contains
1. \(4.6 \times 10^6 \mathrm{bp}\)
2. \(3.3 \times 10^8 \mathrm{bp}\)
3. \(6.6 \times 10^9 \mathrm{bp}\)
4. \(3.3 \times 10^9 \mathrm{bp}\)
1. \(4.6 \times 10^6 \mathrm{bp}\)
2. \(3.3 \times 10^8 \mathrm{bp}\)
3. \(6.6 \times 10^9 \mathrm{bp}\)
4. \(3.3 \times 10^9 \mathrm{bp}\)
Subtopic: The DNA |
87%
From NCERT
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Which of the following processes is related to reverse transcription?
1. DNA dependent DNA synthesis
2. RNA dependent DNA synthesis
3. DNA dependent RNA synthesis
4. RNA dependent polypeptide synthesis
1. DNA dependent DNA synthesis
2. RNA dependent DNA synthesis
3. DNA dependent RNA synthesis
4. RNA dependent polypeptide synthesis
Subtopic: DNA Double Helix |
78%
From NCERT
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Subtopic: Transcription |
69%
From NCERT
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Which plant was used by Taylor to prove semiconservative replication at chromosomal level?
1. Haematoxylan
2. Vicia faba
3. Trillium
4. Ophioglossum
1. Haematoxylan
2. Vicia faba
3. Trillium
4. Ophioglossum
Subtopic: DNA Replication |
94%
From NCERT
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