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Q. No.DNA-dependent RNA polymerase catalyzes polymerization in:
1.
Only in 3’ – 5’ direction
2.
Only in 5’ – 3’ direction
3.
In both directions
4.
In neither directions
Subtopic: Transcription |
85%
From NCERT
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Which of the following helps in the termination of transcription?
| 1. | Sigma factor | 2. | Translocase |
| 3. | Ubiquitin | 4. | Rho factor |
Subtopic: Transcription |
94%
From NCERT
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Which of the following is true for both transcription and DNA replication?
| 1. | The principle of complementarity governs the processes |
| 2. | Only if the two strands act as a template |
| 3. | Only a segment of both strands is involved |
| 4. | Adenine base pairs with thymine |
Subtopic: DNA Replication | Transcription |
80%
From NCERT
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The structure of the ribosome is made of:
| 1. | rRNA and Proteins |
| 2. | rRNA and Polysaccharides |
| 3. | mRNA, rRNA and tRNA |
| 4. | RNA, DNA and Proteins |
Subtopic: Translation |
81%
From NCERT
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Who proposed a semi-conservative mode of replication for DNA?
| 1. | Watson and Crick | 2. | Meselson and Stahl |
| 3. | Hershey and Chase | 4. | Beadle and Tatum |
Subtopic: DNA vs RNA as Genetic Material |
63%
From NCERT
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Which of the following acts as the substrate and provides energy for DNA replication?
| 1. | Dideoxyribonucleoside triphospahtes |
| 2. | Ribonucleoside triphosphates |
| 3. | Deoxyribonucleoside triphospahtes |
| 4. | Deoxyribonucleotide triphosphates |
Subtopic: DNA Replication: I |
64%
From NCERT
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Which of the following acts as a ribozyme for peptide bond formation in bacteria?
1. 5s rRNA
2. 23s rRNA
3. 16s rRNA
4. 5.1s rRNA
1. 5s rRNA
2. 23s rRNA
3. 16s rRNA
4. 5.1s rRNA
Subtopic: Translation |
88%
From NCERT
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In actual structure, tRNA is a compact molecule that looks like a/an:
| 1. | Cloverleaf | 2. | Railroad |
| 3. | Inverted L | 4. | Alpha helix |
Subtopic: Translation |
73%
From NCERT
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The UTR [untranslated regions] in an mRNA:
| 1. | Are present only at 5’ end and are not required for efficient translation |
| 2. | Are present only at 3’ end and are not required for efficient translation |
| 3. | Are present at both 5’ and 3’ends and are not required for efficient translation |
| 4. | Are present at both 5’ and 3’ ends and are required for an efficient translation process |
Subtopic: Translation Mechanism |
80%
From NCERT
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For the multiplication of any alien piece of DNA in an organism it needs to be a part of a chromosome that has a specific:
1. Telomeric sequence
2. Multiple cloning site
3. Ori
4. Selectable marker
1. Telomeric sequence
2. Multiple cloning site
3. Ori
4. Selectable marker
Subtopic: DNA Replication |
90%
From NCERT
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