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Q. No.Assertion: S-strain of Streptococcus pneumoniae is virulent.
Reason: R-strain bacteria can be transformed by the heat-killed S-strain bacteria.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Subtopic: Search for Genetic Material |
73%
From NCERT
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Assertion: In Avery, Macleod and McCarty experiment, digestion of heat-killed lysate with proteases and RNases did not affect transformation but digestion with DNase did.
Reason: DNA is the transforming principle.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Reason: DNA is the transforming principle.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Subtopic: Search for Genetic Material |
83%
From NCERT
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Assertion: Even after the results of Avery, Macleod and McCarty experiment, not all biologists were convinced that DNA is the hereditary material.
Reason: Proteins were shown to have a great diversity and capability of replication.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Reason: Proteins were shown to have a great diversity and capability of replication.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Subtopic: Search for Genetic Material |
56%
From NCERT
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Assertion: Viruses grown in the presence of radioactive phosphorus will contain radioactive DNA but not radioactive proteins.
Reason: Protein did not enter the bacteria from the viruses in the experiment.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false
Reason: Protein did not enter the bacteria from the viruses in the experiment.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false
Subtopic: Search for Genetic Material |
50%
From NCERT
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Assertion: A molecule that can act as a genetic material should be able to generate its replica.
Reason: A molecule that can act as a genetic material should be stable chemically and structurally.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Reason: A molecule that can act as a genetic material should be stable chemically and structurally.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Subtopic: DNA vs RNA as Genetic Material |
77%
From NCERT
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Assertion: Among the two nucleic acids, the DNA is a better genetic material.
Reason: DNA chemically is less reactive and structurally more stable when compared to RNA.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Reason: DNA chemically is less reactive and structurally more stable when compared to RNA.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Subtopic: DNA vs RNA as Genetic Material |
89%
From NCERT
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Assertion: The two strands of a DNA molecule, if separated by heating, can come together when appropriate conditions are provided.
Reason: Heating breaks the hydrogen bonds between nitrogenous bases and leads to denaturation of DNA.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Reason: Heating breaks the hydrogen bonds between nitrogenous bases and leads to denaturation of DNA.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Subtopic: Search for Genetic Material |
From NCERT
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Assertion: Viruses having RNA genome and having shorter life span mutate and evolve faster.
Reason: RNA polymerases have a higher error rate than the DNA polymerases.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Reason: RNA polymerases have a higher error rate than the DNA polymerases.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Subtopic: DNA vs RNA as Genetic Material |
From NCERT
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Assertion: DNA is dependent on RNA for synthesis of proteins.
Reason: Essential life processes have evolved around RNA.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Reason: Essential life processes have evolved around RNA.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Subtopic: DNA vs RNA as Genetic Material |
63%
From NCERT
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Assertion: DNA with 15N incorporated into DNA can be distinguished from the normal DNA by centrifugation in a CsCl density gradient.
Reason: 15N is a radioactive isotope and can be easily tagged and seen on autoradiography.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Reason: 15N is a radioactive isotope and can be easily tagged and seen on autoradiography.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.
Subtopic: DNA Replication |
69%
From NCERT
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