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Q. No.Subtopic: Transcription |
From NCERT
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For the strand separation and stabilisation during DNA replication which of the following sets of enzymes and proteins are required?
1. SSBP, gyrase, primase
2. Topoisomerase, helicase, ligase
3. Gyrase, ligase, primase
4. Topoisomerase, helicase, SSBP
1. SSBP, gyrase, primase
2. Topoisomerase, helicase, ligase
3. Gyrase, ligase, primase
4. Topoisomerase, helicase, SSBP
Subtopic: DNA Replication |
61%
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Which of the following is not required during post transcriptional processing in eukaryotes?
1. Methyl guanosine triphosphate
2. Ligase
3. ScRNA
4. SnRNA
1. Methyl guanosine triphosphate
2. Ligase
3. ScRNA
4. SnRNA
Subtopic: Transcription |
61%
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Which of the following features is correct for bacteria?
1. Presence of intervening sequences in DNA
2. DNA does not show coiling
3. Linear ss-DNA representing single chromosome
4. DNA can be chromosomal as well as extrachromosomal
1. Presence of intervening sequences in DNA
2. DNA does not show coiling
3. Linear ss-DNA representing single chromosome
4. DNA can be chromosomal as well as extrachromosomal
Subtopic: The DNA |
60%
From NCERT
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Termination of polypeptide synthesis in bacteria differs from eukaryotes in
1. Have different termination codons
2. Being GTP dependent
3. Involving more than one type of release factors
4. All of these
1. Have different termination codons
2. Being GTP dependent
3. Involving more than one type of release factors
4. All of these
Subtopic: Translation |
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The accessibility of promoter regions of bacterial DNA in many cases regulated by the interaction of proteins with sequences termed
1. Regulators
2. structural genes
3. Inhibitor genes
4. Operators
1. Regulators
2. structural genes
3. Inhibitor genes
4. Operators
Subtopic: Gene Regulation: Lac Operon |
53%
From NCERT
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Splicing is necessary for preparing a mature transcript and its movement to cytoplasm. It requires
1. scRNA and proteins
2. snRNA and proteins
3. scRNA and snRNA
4. scRNA only
1. scRNA and proteins
2. snRNA and proteins
3. scRNA and snRNA
4. scRNA only
Subtopic: Transcription |
79%
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The DNA strand showing replication using Okazaki fragments also shows
1. Continuous growth in 5' → 3' direction
2. Discontinuous growth on 5' → 3' parental strand
3. Discontinuous growth on 3' → 5' parental strand
4. Involvement of one primer only
1. Continuous growth in 5' → 3' direction
2. Discontinuous growth on 5' → 3' parental strand
3. Discontinuous growth on 3' → 5' parental strand
4. Involvement of one primer only
Subtopic: DNA Replication |
72%
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Prokaryotic transcription mechanism requires involvement of only one polymerase type and
(a) It occurs in cytoplasm only
(b) It is often coupled with translation
(c) It does not require splicing but capping is essential
1. All are correct
2. Both (b) & (c)
3. Both (a) & (c)
4. Only (c) is incorrect
(a) It occurs in cytoplasm only
(b) It is often coupled with translation
(c) It does not require splicing but capping is essential
1. All are correct
2. Both (b) & (c)
3. Both (a) & (c)
4. Only (c) is incorrect
Subtopic: Transcription |
57%
From NCERT
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Pribnow box is a consensus of ________ bases, forming a binding site for E. coli RNA polymerase at promotor
1. TATAAT
2. AGGAGG
3. CAAT
4. GC
1. TATAAT
2. AGGAGG
3. CAAT
4. GC
Subtopic: Transcription |
74%
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