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

Subtopic:  Search for Genetic Material |
 50%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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.
 
Subtopic:  DNA vs RNA as Genetic Material |
 77%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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.
 
Subtopic:  DNA vs RNA as Genetic Material |
 89%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

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.
 
Subtopic:  Search for Genetic Material |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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.
 
Subtopic:  DNA vs RNA as Genetic Material |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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.
 
Subtopic:  DNA vs RNA as Genetic Material |
 63%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

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.
 
Subtopic:  DNA Replication |
 69%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Assertion: Ribonulceoside triphosphates provide energy for polymerization reaction during replication of DNA.
Reason: Ribonulceoside triphosphates serve dual purposes during DNA replication and act as substrate as well for polymerisation.
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 |
 53%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Assertion: For long DNA molecules, the replication occurs within a small opening of the DNA helix, referred to as replication fork.
Reason: The separation of two strands in their entire length will be not feasible energetically.
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 |
 74%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

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.
 
Subtopic:  DNA Replication |
 63%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.