Unlock IMPORTANT QUESTION
This question was bookmarked by 5 NEET 2025 toppers during their NEETprep journey. Get Target Batch to see this question.
✨ Perfect for quick revision & accuracy boost
Buy Target Batch
Access all premium questions instantly
Assertion(A): 20 amino acids have to be coded by the combination of four bases.
Reason(R): Each nucleic acid has four types of bases.
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 |
Level 3: 35%-60%
Hints
Assertion(A): Transcription and translation occur in the same compartment in bacteria.
Reason(R): Translation begins much before transcription ends in bacteria.
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): Translation begins much before transcription ends in bacteria.
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 |
59%
Level 3: 35%-60%
Hints
Assertion(A): The strand that has the polarity 3'→5' acts as a template.
Reason(R): DNA-dependent RNA polymerase catalyses the polymerisation in only one direction, that is, 3'→5'
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): DNA-dependent RNA polymerase catalyses the polymerisation in only one direction, that is, 3'→5'
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 |
77%
Level 2: 60%+
Hints
| Assertion(A): | For long DNA molecules, replication occurs within the replication fork. |
| Reason(R): | It takes a very high amount of energy to open the DNA along its full length. |
| 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 |
81%
Level 1: 80%+
Hints
| Assertion (A): | The main enzyme of replication is known as DNA-dependent RNA polymerase. |
| Reason (R): | This enzyme utilizes the DNA template to catalyze the polymerization of deoxynucleotides. |
| 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 |
74%
Level 2: 60%+
Hints
Assertion(A): There is a need to regulate transcription and translation.
Reason(R): Transcription and translation are energetically very expensive processes.
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): Transcription and translation are energetically very expensive processes.
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 |
62%
Level 2: 60%+
Hints
Assertion(A): If the sequence of bases in one strand is known then the sequence in another strand can be predicted.
Reason(R): These strands run antiparallel to each other.
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): These strands run antiparallel to each other.
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): DNA is the genetic material.
Reason(R): Bacteria which was infected with viruses that had radioactive DNA were found to be radioactive in Hershey and Chase experiment.
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): Bacteria which was infected with viruses that had radioactive DNA were found to be radioactive in Hershey and Chase experiment.
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 |
78%
Level 2: 60%+
Hints
| Assertion(A): | Aminoacylation of tRNA requires energy. |
| Reason(R): | Formation of a peptide bond does not require energy. |
| 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 |
83%
Level 1: 80%+
Hints
Assertion(A): It is the metabolic, physiological, or environmental conditions that regulate the expression of genes.
Reason(R): In the absence of lactose, the beta-galactosidase enzyme is synthesized by E. coli.
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 the absence of lactose, the beta-galactosidase enzyme is synthesized by E. coli.
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: Introduction | Gene Regulation: Lac Operon |
80%
Level 1: 80%+
Hints
© 2026 GoodEd Technologies Pvt. Ltd.