15. Enlisted below are different types of RNAs produced in the cell (Column A) and their functions (Column B), but not in the same order. Column A Column B A. […]
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CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Small Nucleolar RNAs and rRNA Modification
14. Small nucleolar RNAs used to process and chemically modify rRNAs are called (1) ScaRNAs (2) SiRNAs (3) SnoRNA (4) SnRNAs The correct answer is (3) SnoRNA. Small Nucleolar RNAs and […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Transcription in Bacteria and Eukaryotes | RNA polymerase II | Bipartite structure
The following statements are related to transcription in bacteria and eukaryotes. A. During concurrent promoter sequence recognition and melting, melting commences with base flipping where two bases are flipped out […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Some Bacterial tRNA Genes Lack the CCA Sequence at the 3′ End
In bacteria many of the tRNA genes do not contain the CCA sequence found at the 3′ end of tRNA. In this context which one of the following statements represents […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Why Do Functional tRNAs Exist Even When Their Genes Lack the -CCA End
tRNA genes of a Gram positive bacteria were sequenced. While some of the genes possessed sequence corresponding to the -CCA end of the tRNA, others did not. Interestingly, even the […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Different RNA Polymerases and Their Functions
10. Given below are four sentences with blanks (labeled X, Y, Z and L). A. RNA Pol I transcribes X. B. miRNA genes are transcribed by Y. C. The RNA […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
RNAs NOT Transcribed by RNA Polymerase II
9. Which of the following are NOT transcribed by RNA polymerase II? (1) miRNA and some snRNA (2) miRNA and snoRNA (3) mRNA and snoRNA (4) tRNA and 5S […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
RNA polymerase II synthesizes various types of mRNAs and small non-coding RNAs
8. Witch one of the following statement. is generally true shout RNA polymerase II? (1) It is dedicated to transcribing RNA from a single transcription unit, generally a large transcript. […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Promoter Clearance TFIIH Phosphorylation Inhibition
TFIIH Phosphorylation Inhibition: Which Transcription Step Is Most Affected? A highly specific inhibitor that targets the phosphorylation activity of TFIIH is added to an in vitro transcription reaction. Which one […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Which RNA Polymerase Synthesizes Precursors of miRNAs and siRNAs in Eukaryotes?
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 […]
