Regarding DNA replication:
I:
It is semi-conservative.
II:
It is semi-discontinuous.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: DNA Replication |
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Subtopic: Transcription |
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The repressor of the lac operon is synthesised:
| 1. | all the time |
| 2. | only when lactose is present |
| 3. | only when lactose is absent |
| 4. | only when glucose is present in high amount |
Subtopic: Gene Regulation: Lac Operon |
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Consider the two statements:
| Assertion (A): | Transcription and translation can be coupled in bacteria. |
| Reason (R): | The peptide bond formation in prokaryotes is catalysed by a ribozyme. |
| 1. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are False. |
| 4. | Both (A) and (R) are True and (R) correctly explains (A) |
Subtopic: Transcription |
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In a transcription unit, the location of promoter is described as:
| 1. | at the 3' end, downstream of the structural gene |
| 2. | at the 3' end, upstream of the structural gene |
| 3. | at the 5' end, upstream of the structural gene |
| 4. | at the 5' end, downstream of the structural gene |
Subtopic: Transcription |
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The ribozyme that catalyses peptide bond formation in prokaryotes is a part of:
| 1. | the larger subunit of the bacterial ribosome |
| 2. | the smaller subunit of the bacterial ribosome |
| 3. | the 5’ UTR of the mRNA |
| 4. | the 3’ UTR of the mRNA |
Subtopic: Translation |
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Histones are:
1. positively charged basic proteins
2. negatively charged basic proteins
3. positively charged acidic proteins
4. negatively charged acidic proteins
1. positively charged basic proteins
2. negatively charged basic proteins
3. positively charged acidic proteins
4. negatively charged acidic proteins
Subtopic: DNA Packaging |
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For DNA replication, deoxyribonucleoside triphosphates:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | act as substrates |
| II: | provide energy for polymerisation reaction |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: DNA Replication |
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The predominant site for the control of gene expression in prokaryotes is:
1. Transcription initiation
2. Processing of hnRNA
3. Translational level
4. Post translational modification
1. Transcription initiation
2. Processing of hnRNA
3. Translational level
4. Post translational modification
Subtopic: Gene Regulation: Introduction | Gene Regulation: Lac Operon |
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Consider the two statements:
| Statement I: | DNA has evolved from RNA with chemical modifications that make it more stable. |
| Statement II: | DNA being double stranded and having complementary strands further resists changes by evolving a process of repair. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement II is incorrect; Statement I is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: DNA vs RNA as Genetic Material |
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