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Q. No.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.
Subtopic: Search for Genetic Material |
59%
Level 3: 35%-60%
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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%
Level 3: 35%-60%
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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 |
80%
Level 1: 80%+
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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 |
51%
Level 3: 35%-60%
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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 |
Level 3: 35%-60%
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the most appropriate answer from the options given below:
| Assertion (A): | DNA is dependent on RNA for synthesis of proteins. |
| Reason (R): | Essential life processes have evolved around RNA. |
| 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. | Both (A) and (R) are False. |
Subtopic: DNA vs RNA as Genetic Material |
64%
Level 2: 60%+
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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 |
71%
Level 2: 60%+
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Consider the given two statements:
| Assertion(A): | Ribonulceoside triphosphates provide energy for polymerization reaction during replication of DNA. |
| Reason(R): | Ribonulceoside triphosphates serve dual purposes during DNA replication and act as substrate as well for polymerisation. |
| 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. | Both (A) and (R) are False |
Subtopic: DNA Replication |
54%
Level 3: 35%-60%
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Assertion: A piece of DNA if needed to be propagated during recombinant DNA procedures requires a vector.
Reason: Plasmids are good cloning vectors and are extrachromosomal DNA molecules found in some 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.
Reason: Plasmids are good cloning vectors and are extrachromosomal DNA molecules found in some 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: DNA Replication |
64%
Level 2: 60%+
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Assertion: It is necessary to define the boundaries that would demarcate the region and the strand of DNA that would be transcribed.
Reason: Unlike DNA replication the synthesis of RNA on the template of DNA does not follow complementarity.
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: Unlike DNA replication the synthesis of RNA on the template of DNA does not follow complementarity.
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: Genetic Code | Transcription |
71%
Level 2: 60%+
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