Q. No.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):
In transcription, the strand that does not code for anything is referred to as the coding strand.
Reason (R):
It is the presence of the promoter in a transcription unit that defines the template and coding strands.
In the light of the above statements, choose the most appropriate answer from the options given below :
1.
Both (A) and (R) are true and (R) is the correct explanation of (A).
2.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.
Both (A) and (R) are false.
4.
(A) is true but (R) is false.
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| Assertion (A): | Transcription and translation can be coupled in bacteria. |
| Reason (R): | In bacteria, the mRNA does not require any processing to become active, and also transcription and translation take place in the same compartment. |
| 1. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 2. | Both (A) and (R) are False. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | (A) is True but (R) is False. |
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| Statement I: | ‘A’ is capping where an unusual nucleotide (methyl guanosine triphosphate) is added to the 5'-end of hnRNA. |
| Statement II: | ‘B’ is polyadenylation where 20-30 adenylate residues are added at the 3’ end in a template-dependent manner. |
| Statement III: | “C” constitute the sequences of the split gene that do not appear in mature or processed RNA. |
| Statement IV: | The presence of D in the eukaryotic split gene is reminiscent of antiquity. |
| Statement IV: | ‘E’ is called as RNA splicing. |
1. Only Statement I and Statement III
2. Only Statement II and Statement III
3. Only Statement II and Statement IV
4. Only Statement I and Statement IV
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| Assertion (A): | An adapter molecule, that on one hand can read the genetic code and on the other hand can bind to specific amino acids, is required for the translation of proteins. |
| Reason (R): | Amino acids have no structural specialties to read the code uniquely. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are False. |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is True but (R) is False. |
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1. 5’-AGU-3’ and 5’-UAC-3’
2. 3’-AGU-5’ and 3’-UAC-5’
3. 5’-TCA -3’ and 5’-ATG-3’
4. 3’-TCA -5’ and 3’-ATG-5’
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| A | B | C | D | |
| 1. | Amino acid binding site | DHU loop | Anticodon | TψC loop |
| 2. | Amino acid binding site | TΨC loop | Anticodon | DHU loop |
| 3. | Anticodon | DHU loop | Amino acid binding site | TΨC loop |
| 4. | Anticodon | TΨC loop | Amino acid binding site | DHU loop |
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| Assertion (A): | In the first phase of translation, it is important that the charging of tRNA in the presence of ATP takes place. |
| Reason (R): | The formation of a peptide bond requires energy. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are False. |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is True but (R) is False. |
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Statement I: The formation seen in the figure is called as polyribosome.
Statement: Ribosomes of a polyribosome translate different proteins.
1. Statement I is correct, Statement II is correct.
2. Statement I is correct, Statement II is incorrect.
3. Statement I is incorrect, Statement II is correct.
4. Statement I is incorrect, Statement II is incorrect.
| 1. | transcriptional level (formation of the primary transcript) |
| 2. | processing level (regulation of splicing) |
| 3. | transport of mRNA from the nucleus to the cytoplasm |
| 4. | translational level |
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| I: | It is the metabolic, physiological, or environmental conditions that regulate the expression of genes. |
| II: | The development and differentiation of embryos into adult organisms are also a result of the coordinated regulation of the expression of several sets of genes. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
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