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Q. No.Subtopic: The DNA |
88%
Level 1: 80%+
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Transcriptionally, active chromatin is termed as:
| 1. | Heterochromatin | 2. | Euchromatin |
| 3. | Prechromatin | 4. | Prochromatin |
Subtopic: DNA Packaging |
92%
Level 1: 80%+
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In a strand of nucleic acid, two nucleotides are linked together by:
1. 3’ – 5’ phosphodiester bond
2. 5’ – 3’ phosphodiester bond
3. 2’ – 5’ phosphodiester bond
4. 3’ – 1’ phosphodiester bond
Subtopic: The DNA |
72%
Level 2: 60%+
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In Griffith's experiment, which of the following bacterial strains was capable of causing pneumonia in mice?
| 1. | Live R |
| 2. | Bacteria strain with polysaccharide coat |
| 3. | Heat Killed S |
| 4. | Live R with capsule and Heat Killed S |
Subtopic: Search for Genetic Material |
Level 3: 35%-60%
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What facilitates the opening of the helix during the elongation step of transcription?
| 1. | RNA polymerase | 2. | Helicase |
| 3. | Topoisomerase | 4. | Gyrase |
Subtopic: Transcription: I |
57%
Level 3: 35%-60%
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The repressor of the lac operon is:
| 1. | Lactose itself | 2. | A steroid |
| 3. | Synthesized constitutively | 4. | A product of structural gene |
Subtopic: Gene Regulation: Lac Operon |
54%
Level 3: 35%-60%
Hints
The base pairing in a double stranded DNA is correctly described as:
| 1. | Similar | 2. | Identical |
| 3. | Complementary | 4. | Synergistic |
Subtopic: DNA Double Helix |
95%
Level 1: 80%+
Hints
In a transcription unit, RNA polymerase binds to:
| 1. | Ori | 2. | Promoter |
| 3. | Operator | 4. | Structural gene |
Subtopic: Transcription: I |
85%
Level 1: 80%+
Hints
The distance between a base pair in the DNA double helix is approximately:
| 1. | 2.0 nm | 2. | 0.34 nm |
| 3. | 20 nm | 4. | 3.4 nm |
Subtopic: DNA Double Helix |
84%
Level 1: 80%+
Hints
Subtopic: Transcription |
93%
Level 1: 80%+
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