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Q. No.
Assertion (A):
Lactose is termed as inducer.
Reason (R):
It regulates switching on and off of the operon.
Choices for Assertions and reasons:
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: Gene Regulation: Lac Operon |
88%
Level 1: 80%+
Hints
Assertion(A): Bacterial transcribed mRNA cannot be translated directly.
Reason(R): This mRNA has not got split gene arrangement.
Choices for Assertions and reasons:
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 mRNA has not got split gene arrangement.
Choices for Assertions and reasons:
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 |
74%
Level 2: 60%+
Hints
Assertion(A): Both the nucleic acids (DNA and RNA) have the ability to direct their duplications.
Reason(R): They follow the rule of base pairing and complementarity.
Choices for Assertions and reasons:
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): They follow the rule of base pairing and complementarity.
Choices for Assertions and reasons:
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 |
65%
Level 2: 60%+
Hints
Assertion(A): During RDT procedures, the gene of interest needs a vector.
Reason(R): Because replication process in bacteria needs origin of replication.
Choices for Assertions and reasons:
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): Because replication process in bacteria needs origin of replication.
Choices for Assertions and reasons:
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: I |
81%
Level 1: 80%+
Hints
Assertion(A): A permutation combination of 4 to the power 3 (4 × 4 × 4) would generate 64 codons.
Reason(R): In order to code for all the 20 amino acids, the code should be made up of three nucleotides.
Choices for Assertions and reasons:
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): In order to code for all the 20 amino acids, the code should be made up of three nucleotides.
Choices for Assertions and reasons:
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: I |
Level 3: 35%-60%
Hints
Assertion(A): The amino acids have no structural specialties to read the code uniquely.
Reason(R): Crick postulated the presence of an adapter molecule in translation.
Choices for Assertions and reasons:
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): Crick postulated the presence of an adapter molecule in translation.
Choices for Assertions and reasons:
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 |
58%
Level 3: 35%-60%
Hints
| Assertion (A): | Some specific sequences in DNA are called repetitive sequences which made the basis for DNA fingerprinting. |
| Reason (R): | A small stretch of DNA is repeated many times in these specific sequences. |
| 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 |
51%
Level 3: 35%-60%
Hints
Assertion(A): The genetic implications of the structure of DNA became very clear.
Reason(R): The process of DNA synthesis follows principle of complementarity.
Choices for Assertions and reasons:
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): The process of DNA synthesis follows principle of complementarity.
Choices for Assertions and reasons:
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%
Level 2: 60%+
Hints
Assertion(A): S strain bacteria produce smooth shiny colonies.
Reason(R): S strain bacteria produce mucous (polysaccharide) coat.
Choices for Assertions and reasons:
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): S strain bacteria produce mucous (polysaccharide) coat.
Choices for Assertions and reasons:
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: Search for Genetic Material |
86%
Level 1: 80%+
Hints
| Assertion (A): | Viruses grown in the presence of radioactive phosphorus contained radioactive DNA but not radioactive protein. |
| Reason(R): | Protein contains phosphorus but DNA does not. |
| 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: Search for Genetic Material |
86%
Level 1: 80%+
Hints
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