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  • 1(current)
Q. No.
Consider the given statements:
I: DNA – deoxyribonucleic acid – is the genetic material, at least for the majority of organisms. 
II: RNA though it also acts as a genetic material in some viruses, mostly functions as a messenger.
III. RNA can function as an adapter, structural, and in some cases as a catalytic molecule. 
 
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:  The DNA | DNA vs RNA as Genetic Material |
 88%
Level 1: 80%+
Hints

Which of the following would be nucleoside found only in RNA?

1. Thymidine 2. Cytidine
3. Uridine 4. Adenosine

Subtopic:  DNA vs RNA as Genetic Material |
 94%
Level 1: 80%+
Hints

DNA is structurally and chemically more stable than RNA because of the following except:

1. It has thymine instead of uracil
2. 2’ –OH is absent in DNA
3. It replicates itself based on complementary base pairing
4. It does not have any catalytic role

Subtopic:  DNA vs RNA as Genetic Material |
 54%
Level 3: 35%-60%
Hints
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A molecule that can act as a genetic material should be able to express itself in the form of ‘Mendelian Characters’.
Reason (R): A molecule that can act as a genetic material should provide the scope for slow changes.
In the light of the above statements, choose the most appropriate answer from the options given below :
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. Both (A) and (R) are False.
4. (A) is True but (R) is False.
Subtopic:  DNA vs RNA as Genetic Material |
 79%
Level 2: 60%+
Hints

Consider the following statements:

I: RNA is the genetic material of the QB bacteriophage.
II: DNA chemically is less reactive and more stable than RNA.
III: Viruses having RNA genomes and shorter life spans mutate & evolve slowly.

Which of the above statements are true?

1. I and II only 2. I and III only
3. II and III only 4. I, II, and III
Subtopic:  DNA vs RNA as Genetic Material |
 75%
Level 2: 60%+
Hints

The protein synthesizing machinery of a cell has evolved around:

1. DNA 2. RNA
3. Protein itself 4. Viroids
Subtopic:  DNA vs RNA as Genetic Material |
 90%
Level 1: 80%+
Hints
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): RNA was the first genetic material.
Reason (R): RNA can act as the template for the synthesis of DNA and has catalytic functions as well.
In the light of the above statements, choose the most appropriate answer from the options given below :
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are False.
3. Both (A) and (R) are True but (R) is not the correct explanation of (A).
4. (A) is True but (R) is False.
Subtopic:  DNA vs RNA as Genetic Material |
 50%
Level 3: 35%-60%
Hints
Consider the two statements:
Statement I: There is now enough evidence to suggest that essential life processes (such as metabolism, translation, splicing, etc.), evolved around RNA. 
Statement II: DNA being double-stranded and having complementary strands further resists changes by evolving a process of repair.
1. Statement I is correct, Statement II is correct 
2. Statement I is correct, Statement II is incorrect
3. Statement I is incorrect, Statement II is correct
4. Statement I is incorrect, Statement II is incorrect 
Subtopic:  DNA vs RNA as Genetic Material |
 87%
Level 1: 80%+
Hints
The given figure shows:
 
1. Watson and Crick's model for semi-conservative DNA replication
2. Temin and Baltimore model for reverse transcription
3. Transcription of rRNA and tRNA on the template of DNA
4. Transcription of mRNA and hnRNA on the template of DNA
Subtopic:  DNA vs RNA as Genetic Material |
 95%
Level 1: 80%+
Hints
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Who proposed a semi-conservative mode of replication for DNA?

1. Watson and Crick 2. Meselson and Stahl
3. Hershey and Chase 4. Beadle and Tatum

Subtopic:  DNA vs RNA as Genetic Material |
 62%
Level 2: 60%+
Hints
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