Q. No.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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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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