Select Question Set:
Q. No.Assertion: It is the presence of the promoter in a transcription unit that defines the template and coding strands.
Reason: Promoter is a DNA sequence that provides binding site for RNA polymerase.
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: Transcription |
53%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion: RNA polymerases are able to catalyse all the three steps of transcription in prokaryotes, which are initiation, elongation and termination.
Reason: They do not require any other proteins for the process of transcription in prokaryotes.
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.
Reason: They do not require any other proteins for the process of transcription in prokaryotes.
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: Transcription |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion: Transcription and translation can be coupled in bacteria.
Reason: The mRNA does not require any processing and both processes take place in same compartment.
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.
Reason: The mRNA does not require any processing and both processes take place in same compartment.
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.
82%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion: An adapter molecule, that on one hand can read the genetic code and on the other hand can bind to specific amino acids, is required for translation of proteins.
Reason: Amino acids have no structural specialities to read the code uniquely.
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.
Reason: Amino acids have no structural specialities to read the code uniquely.
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: Genetic Code |
65%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion: A very low level of expression of lac operon is present in E.coli all the time.
Reason: The structural genes of lac operon are transcribed constitutively.
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.
Reason: The structural genes of lac operon are transcribed constitutively.
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: Gene Regulation: Lac Operon |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion: Regulation of lac operon by repressor is referred to as negative regulation.
Reason: Regulation of lac operon is visualised as regulation of enzyme synthesis by its substrate.
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.
Reason: Regulation of lac operon is visualised as regulation of enzyme synthesis by its substrate.
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: Gene Regulation: Lac Operon |
60%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
In the lac operon, transcription is regulated by a repressor protein and only takes place in the presence of lactose. Which of the following statements is correct?
1. The repressor protein binds to the promoter site to inhibit transcription.
2. Lactose binds to the promoter site to initiate transcription.
3. Lactose binds to the repressor protein to inhibit transcription.
4. The repressor protein binds the operator site to inhibit transcription.
1. The repressor protein binds to the promoter site to inhibit transcription.
2. Lactose binds to the promoter site to initiate transcription.
3. Lactose binds to the repressor protein to inhibit transcription.
4. The repressor protein binds the operator site to inhibit transcription.
Subtopic: Gene Regulation: Lac Operon |
65%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
One of the most frequently used techniques in DNA fingerprinting is:
1. VNTR
2. SSCP
3. SCAR
4. AFLP
1. VNTR
2. SSCP
3. SCAR
4. AFLP
Subtopic: DNA Fingerprinting |
94%
From NCERT
NEET - 2013
Please attempt this question first.
Hints
Please attempt this question first.
In an inducible operon, the genes are:
1. usually not expressed unless a signal turns them "on"
2. usually expressed unless a signal turns them "off"
3. never expressed
4. always expressed
1. usually not expressed unless a signal turns them "on"
2. usually expressed unless a signal turns them "off"
3. never expressed
4. always expressed
Subtopic: Gene Regulation: Lac Operon |
68%
From NCERT
NEET - 2013
Please attempt this question first.
Hints
Please attempt this question first.
Genes of interest can be selected from a genomic library by using:
1. Cloning vectors
2. DNA probes
3. Gene targets
4. Restriction enzymes
1. Cloning vectors
2. DNA probes
3. Gene targets
4. Restriction enzymes
Subtopic: DNA Fingerprinting |
53%
NEET - 2013
Please attempt this question first.
Hints
Select Question Set:
© 2024 GoodEd Technologies Pvt. Ltd.