α-Amanitin is a fungal toxin which inhibits eukaryotic RNA polymerases. The three eukaryotic RNA polymerases show differential sensitivity to this toxin. Which one of the following order (higher to lower) […]
Tag: DNA transcription
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CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Bacterial Transcription Termination Role of NusA
All of the following statements about bacterial transcription termination are true EXCEPT (1) some terminator sequences require Rho protein for termination. (2) inverted repeat and ‘T’ rich non-template strand define […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Rho-Dependent Termination | hexameric ATP-dependent RNA helicase Rho
15. Rho factor is involved in termination of transcription in prokaryotes. Genetic manipulations indicate that Rho-dependent termination requires the presence of a specific recognition sequence on the newly synthesized RNA […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Escherichia coli RNA polymerase α2ββ’ω Components rifampicin
13. Which one of the following statements is NOT a correct feature of Escherichia coli RNA polymerase? (1) Presence of the σ subunit along with α2ββ’ω core RNA polymerase is […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
How Bacteria Adapt to Environmental Changes: Mechanisms of Gene Regulation Explained”
How Bacteria Adapt to Environmental Changes: Mechanisms of Gene Regulation Explained 12. One of the mechanism is used by bacteria for adaptation to changed environment is altering transcription of […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Role of Sigma (σ) Subunit in E. coli RNA Polymerase: Function, Mechanism
Role of Sigma (σ) Subunit in E. coli RNA Polymerase: Function, Mechanism 11. σ subunit of E. colt RNA polymerase DOES NOT (1) initiate transcription and fall off during elongation […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Which Factor Ensures Stable Binding of RNA Polymerase to the Promoter? | CSIR NET Life Science MCQ
8. Which one of the following ensures stable binding of RNA polymerase at the promoter site? (1) DNA photolyase (2) Sigma factor (3) DNA glycosylase (4) Rec A Which one […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Which of the Following Statements Is NOT Correct? | DNA vs RNA Synthesis MCQ Explained for CSIR NET Life Science
4. Which one of the following statements is NOT correct? (1) Together with proteins rRNA provides a site for polypeptide synthesis. (2) All DNA molecules are unbranched polymers of nucleotides. […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
mRNA Sequence from DNA in Plants – Transcription MCQ Explained for CSIR NET Life Science
3. In plant, if the sequence 5’-GATGGCACGAT-3’ is transcribe using opposite strand as template, the sequence of corresponding mRNA will be (1) 5’-CUACCGUGCUA-3’ (2) 5’-GAUGGCACGAU-3’ (3) 5’-AUCGUGCCAUC-3’ (4) 5’ATGTCCATCAUA-3’ […]
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If DNA Has the Sequence 5’-ATGCTCA-3’, What Will Be the mRNA Sequence?
2. If DNA have sequence 5’-ATGCTCA-3’, is used as template strand, then the sequence of mRNA will be (1) UAGCUTU (2) UACGAGU (3) UGAGCAU (4) TUCGAGT If DNA has […]
