Which RNA Polymerase Synthesizes Precursors of miRNAs and siRNAs in Eukaryotes? 6. In eukaryotes, precursors of micro RNAs (miRNAs) and small interfering RNAs (siRNAs) are usually synthesized by (1) RNA […]
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CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Understanding the Eukaryotic Gene Promoter Location
4. Among the following which statement is correct regarding the promoter of the eukaryotic gene? (1) It is always located upstream of transcription start site (2) It is located downstream […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Compound Inhibits Transcription Elongation in Both Prokaryotes and Eukaryotes
3. Which of the following compound is capable to inhibit transcription elongation, both in prokaryotes and eukaryotes? (1) Rifamycin (2) a-amanitin (3) Streptomycin (4) Actinomycin-D Correct Answer (4) Actinomycin […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
RNA Polymerase Does α-Amanitin Inhibit
2. α-amanitin inhibits (1) only RNA polymerase I (2) mainly RNA polymerase II (3) only RNA polymerase III (4) all RNA polymerases Which RNA Polymerase Does α-Amanitin Inhibit? Detailed Explanation […]
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
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 RNA Polymerase Subunit Is Essential for Transcription Initiation? | CSIR NET Life Science MCQ
9. Mutation in which subunit of RNA polymerase holoenzyme would have defect in correct initiation of transcription? (1) α subunit (2) β subunit (3) β’ subunit (4) σ-subunit Mutation in […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
What Is the Role of Sigma Factor σ⁷⁰ in E. coli? | CSIR NET Life Science MCQ Explained
7. Presence of sigma factor (σ70) in Escherichia colt facilitates (1) Sequence specific localization of RNA polymerase on the promoter regions of genes (2) Phosphorylation of C-terminal tail of RNA […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Which Sigma Factor Mutation Affects Thermal Stress Adaptation in E. coli? | CSIR NET Life Science MCQ
6. A mutation in which one of the following sigma factors may be a possible cause for E. colt failing to adapt in response to thermal stress? (1) σ70 (2) […]
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. […]
