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Q. No.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 |
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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 |
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A molecule that can act as a genetic material must fulfil all the following criteria except:
| 1. | It should be able to generate its replica |
| 2. | It should chemically and structurally be stable |
| 3. | It should provide scope for rapid mutations |
| 4. | It should be able to express itself in the form of “Mendelian Characters” |
Subtopic: Search for Genetic Material |
91%
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What defines a coding and a template strand in the transcription unit?
| 1. | Structural gene | 2. | Ori |
| 3. | Terminator | 4. | Promoter |
Subtopic: Transcription: I |
68%
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The DNA dependent polymerases catalyze:
| 1. | Only in 3’ – 5’ direction |
| 2. | Only in 5’ – 3’ direction |
| 3. | In both directions |
| 4. | In neither directions |
Subtopic: DNA Replication: I |
84%
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DNA is structurally and chemically more stable than RNA because of the following except:
| 1. | It has thymine instead of uracil |
| 2. | 2’ –OH is absent in DNA |
| 3. | It replicates itself based on complementary base pairing |
| 4. | It does not have any catalytic role |
Subtopic: DNA vs RNA as Genetic Material |
54%
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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 |
62%
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Subtopic: Transcription: I |
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The discontinuously synthesized DNA fragments are later joined by:
| 1. | DNA helicase | 2. | Topoisomerase |
| 3. | DNA ligase | 4. | DNA polymerase |
Subtopic: DNA Replication |
94%
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If E.coli was allowed to grow for 80 minutes after transfer from 15N to 14N medium, the number of hybrid density DNA molecules would be:
| 1. | 2 | 2. | 16 |
| 3. | 14 | 4. | 8 |
Subtopic: DNA Replication |
61%
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