The RNA polymerase I does not transcribe:
1. 28S rRNA
2. 18S rRNA
3. 5.8S rRNA
4. 5S rRNA
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 |
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) |
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 |
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 |
I: | act as substrates |
II: | provide energy for polymerisation reaction |
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 |