Q. No.Which enzyme polymerizes RNA with defined sequences in a template independent manner?
1.
Peptidyl transferase
2.
RNA polymerase
3.
Reverse transcriptase
4.
Polynucleotide phosphorylase
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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 |
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Histones are rich in amino acids:
| 1. | Arginine and Lysine |
| 2. | Arginine and Leucine |
| 3. | Arginine and Isoleucine |
| 4. | Aspartate and Glutamate |
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RNA is not the genetic material in:
| 1. | Tobacco mosaic virus | 2. | QB bacteriophage |
| 3. | HIV | 4. | Archaebacteria |
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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 |
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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” |
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Insertion or deletion of how many bases will not cause a frameshift mutation?
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | Any number |
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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 |
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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 |
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