Q. No.A typical nucleosome unit consists of about:
1.
60 base pairs
2.
140 base pairs
3.
200 base pairs
4.
400 base pairs
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The core RNA polymerase is capable of catalyzing which steps of transcription?
| 1. | Initiation only | 2. | Elongation only |
| 3. | Termination only | 4. | All of these |
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At any instant, RNA is transcribed on which of the following strands of DNA?
| 1. | Coding strand | 2. | Template strand |
| 3. | Lagging strand | 4. | Leading strand |
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To form a nucleoside, a nitrogenous base is linked to a pentose sugar:
| 1. | Through a P-Glycosidic linkage at carbon atom number 1 |
| 2. | Through a P-Glycosidic linkage at carbon atom number 5 |
| 3. | Through an N-Glycosidic linkage at carbon atom number 1 |
| 4. | Through an N-Glycosidic linkage at carbon atom number 5 |
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The lac Y gene codes for permease, which increases the permeability of the cell to:
| 1. | Glucose | 2. | Galactose |
| 3. | cAMP | 4. | β-galactosides |
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Nucleosomes constitute the repeating subunits of a structure in the nucleus called:
| 1. | Nucleoid | 2. | Chromatid |
| 3. | Solenoid | 4. | Chromatin |
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In the genetic code, the codon UUC codes for:
| 1. | Methionine | 2. | Phenylalanine |
| 3. | Tyrosine | 4. | Valine |
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Which of the following helps in the termination of transcription?
| 1. | Sigma factor | 2. | Translocase |
| 3. | Ubiquitin | 4. | Rho factor |
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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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