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Q. No.In a bacterium when RNA-polymerase binds to the promoter on a transcription unit during transcription, it
1. terminates the process
2. helps remove introns
3. initiates the process
4. inactivates the exons
Subtopic: Transcription |
81%
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Study the given diagrammatic representation of Griffith's experiments to demonstrate transformation in bacteria.
Select the option which is incorrectly representing the experiment :
1. (i) and (iii)
2. (ii) and (iii)
3. (iii) and (iv)
4. (ii) and (iv)
Select the option which is incorrectly representing the experiment :
1. (i) and (iii)
2. (ii) and (iii)
3. (iii) and (iv)
4. (ii) and (iv)
Subtopic: Search for Genetic Material |
93%
From NCERT
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Which one of the following diagram correctly represents DNA replication in eukaryotes?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: DNA Replication |
From NCERT
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In the given figure of translation machinery of eukaryotes, select the correct labellings for (i), (ii), (iii) and (iv) :
1. (i) Codon, (ii) Anticodon, (iii) tRNA, (iv) 3'end of mRNA
2. (i) Anticodon, (ii) Codon, (iii) 3'end of mRNA , (iv) 5'end of mRNA
3. (i) Polypeptide chain, (ii) Large subunit of ribosome, (iii) 5'end of mRNA, (iv) tRNA
4. (i) Ribozyme, (ii) Polypeptide chain, (iii) tRNA, (iv) 5'end of tRNA
1. (i) Codon, (ii) Anticodon, (iii) tRNA, (iv) 3'end of mRNA
2. (i) Anticodon, (ii) Codon, (iii) 3'end of mRNA , (iv) 5'end of mRNA
3. (i) Polypeptide chain, (ii) Large subunit of ribosome, (iii) 5'end of mRNA, (iv) tRNA
4. (i) Ribozyme, (ii) Polypeptide chain, (iii) tRNA, (iv) 5'end of tRNA
Subtopic: Translation |
80%
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Select the important goals of HGP from the given options:
(i) Store the information for data analysis.
(ii) Cloning and amplification of human DNA.
(iii) Identify all the genes present in human DNA.
(iv) Use of DNA information to trace human history.
1. (i) and (ii)
2. (ii) and (iii)
3. (i) and (ii)
4. (ii) and (iv)
(i) Store the information for data analysis.
(ii) Cloning and amplification of human DNA.
(iii) Identify all the genes present in human DNA.
(iv) Use of DNA information to trace human history.
1. (i) and (ii)
2. (ii) and (iii)
3. (i) and (ii)
4. (ii) and (iv)
Subtopic: Human Genome Project |
52%
From NCERT
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Study the given picture related to replication. It is _______ type of replication.
1. Conservative.
2. Semi-conservative.
3. Dispersive.
4. Data is insufficient.
1. Conservative.
2. Semi-conservative.
3. Dispersive.
4. Data is insufficient.
Subtopic: DNA Replication: I |
91%
From NCERT
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| Assertion (A): | There is a set of negatively charged basic proteins called Histone. |
| Reason (R): | Histone octamer is made of eight histone molecules. |
| 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. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: DNA Packaging |
80%
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Given below are statements on the structure of the DNA double helix.
1. The helix generally is wound clockwise.
2. purines and pyrimidines are paired by different numbers of hydrogen bonds.
3. The two strands run in parallel polarity.
4. The sugar in the DNA backbone is pentose sugar.
Which of the above statement/s is/are NOT TRUE?
1. Only 1.
2. Only 2.
3. Only 3.
4. Only 2 and 4.
1. The helix generally is wound clockwise.
2. purines and pyrimidines are paired by different numbers of hydrogen bonds.
3. The two strands run in parallel polarity.
4. The sugar in the DNA backbone is pentose sugar.
Which of the above statement/s is/are NOT TRUE?
1. Only 1.
2. Only 2.
3. Only 3.
4. Only 2 and 4.
Subtopic: DNA Double Helix |
74%
From NCERT
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The fact that a purine base always pairs through hydrogen bonds with a pyrimidine base in the DNA double helix leads to:
1. the anti-parallel nature.
2. the semi-conservative nature.
3. uniform width throughout the DNA.
4. uniform length in all DNA.
1. the anti-parallel nature.
2. the semi-conservative nature.
3. uniform width throughout the DNA.
4. uniform length in all DNA.
Subtopic: DNA Double Helix |
62%
From NCERT
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In the representation of the Central Dogma of Molecular Biology given below, identify P, Q and R.
1. P: ligase; Q: histone; R: polymerase
2. P: translation; Q: mRNA; R: transcription
3. P: splicing; Q: mRNA; R: capping
4. P: transcription: Q: mRNA; R: transcription
1. P: ligase; Q: histone; R: polymerase
2. P: translation; Q: mRNA; R: transcription
3. P: splicing; Q: mRNA; R: capping
4. P: transcription: Q: mRNA; R: transcription
Subtopic: DNA Double Helix |
69%
From NCERT
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