Select Question Set:
Q. No.
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 |
77%
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.
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 |
79%
Level 2: 60%+
Hints
Assertion(A): Specialised computer-based programs were developed for Sanger's sequencing method.
Reason(R): Alignment of overlapping fragments was not possible humanly.
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): Alignment of overlapping fragments was not possible humanly.
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: Human Genome Project |
75%
Level 2: 60%+
Hints
Assertion(A): Lac operon regulation is a kind of regulation of enzyme synthesis by its substrate.
Reason(R): Lac operon is regulated by the presence of glucose in the medium which acts as an inducer.
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): Lac operon is regulated by the presence of glucose in the medium which acts as an inducer.
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 |
81%
Level 1: 80%+
Hints
Assertion (A): DNA polymerase II fills the gap that is left after the removal of RNA primers during DNA replication.
Reason (R): In eukaryotes RNA polymerase I transcribesrRNA, hnRNA and t-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.
Reason (R): In eukaryotes RNA polymerase I transcribesrRNA, hnRNA and t-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 Replication | Transcription |
59%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
The ‘beads-on-string’ is the description used for the structure of:
| 1. | nucleolus in a nucleus |
| 2. | heterochromatic inactivated X chromosome in females |
| 3. | nucleosome in chromatin |
| 4. | tetrad of paired homologs in first meiosis |
Subtopic: DNA Packaging |
94%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Select Question Set:
© 2026 GoodEd Technologies Pvt. Ltd.