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Q. No.Identify the correct statements:
I:
DNA acts as the genetic material in most organisms.
II:
RNA though it also acts as a genetic material in some viruses, mostly functions as a messenger.
III:
RNA functions as an adapter, structural, and in some cases as a catalytic molecule.
1.
I and II only
2.
I and III only
3.
II and III only
4.
I, II and III only
Subtopic: DNA vs RNA as Genetic Material | Translation |
From NCERT
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Regarding the conclusions that can be from the Griffith experiment:
I: R strain bacteria was somehow been transformed by the heat-killed S strain bacteria.
II: Some ‘transforming principle’, transferred from the heat-killed S strain, enabled the R strain to synthesise a smooth polysaccharide coat and become virulent.
III: The biochemical nature of genetic material was DNA.
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
I: R strain bacteria was somehow been transformed by the heat-killed S strain bacteria.
II: Some ‘transforming principle’, transferred from the heat-killed S strain, enabled the R strain to synthesise a smooth polysaccharide coat and become virulent.
III: The biochemical nature of genetic material was DNA.
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Search for Genetic Material |
56%
From NCERT
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Assertion(A): Repetitive sequences have become very useful identification tools in forensic applications.
Reason(R): DNA from every tissue from an individual show the different degree of polymorphism.
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.
Reason(R): DNA from every tissue from an individual show the different degree of polymorphism.
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 Fingerprinting |
59%
From NCERT
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Assertion(A): 20 amino acids have to be coded by the combination of four bases.
Reason(R): Each nucleic acid has four types of bases.
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.
Reason(R): Each nucleic acid has four types of bases.
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: Genetic Code |
From NCERT
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Assertion(A): Transcription and translation occur in the same compartment in bacteria.
Reason(R): Translation begins much before transcription ends in bacteria.
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.
Reason(R): Translation begins much before transcription ends in bacteria.
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: Transcription |
60%
From NCERT
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Assertion(A): The strand that has the polarity 3'→5' acts as a template.
Reason(R): DNA-dependent RNA polymerase catalyses the polymerisation in only one direction, that is, 3'→5'
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.
Reason(R): DNA-dependent RNA polymerase catalyses the polymerisation in only one direction, that is, 3'→5'
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 Double Helix |
77%
From NCERT
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Assertion(A): For long DNA molecules, replication occurs within the replication fork.
Reason(R): It takes a very high amount of energy to open the DNA along its full length.
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.
Reason(R): It takes a very high amount of energy to open the DNA along its full length.
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 Replication |
82%
From NCERT
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Assertion(A): The main enzyme of replication is known as DNA-dependent RNA polymerase.
Reason(R): This enzyme utilizes the DNA template to catalyze the polymerization of deoxynucleotides.
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.
Reason(R): This enzyme utilizes the DNA template to catalyze the polymerization of deoxynucleotides.
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 Replication |
74%
From NCERT
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Assertion(A): There is a need to regulate transcription and translation.
Reason(R): Transcription and translation are energetically very expensive processes.
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.
Reason(R): Transcription and translation are energetically very expensive processes.
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: Translation |
62%
From NCERT
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Assertion(A): If the sequence of bases in one strand is known then the sequence in another strand can be predicted.
Reason(R): These strands run antiparallel to each other.
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.
Reason(R): These strands run antiparallel to each other.
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 Double Helix |
60%
From NCERT
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