Capping is a process in which ............. .

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(B) Capping is a post-transcriptional modification process in eukaryotes.In this process,an unusual nucleotide,$7$-methyl guanosine triphosphate,is ad

Vedclass · Accepted Answer

Methyl guanosine triphosphate is added at the $5'$ end.

Vedclass · Answer

(B) Capping is a post-transcriptional modification process in eukaryotes.In this process,an unusual nucleotide,$7$-methyl guanosine triphosphate,is added to the $5'$ end of the heterogeneous nuclear $RNA$ $(hnRNA)$.This cap protects the $5'$ end of the $mRNA$ from degradation by exonucleases and helps in the initiation of translation by facilitating ribosome binding.Therefore,the correct option is $B$.

Column-$I$ (Enzyme)	Column-$II$ (Product)
$P$. $RNA$ polymerase-$I$	$I$. $rRNA$ $(18S, 28S, 5.8S)$
$Q$. $RNA$ polymerase-$II$	$II$. $tRNA, 5S rRNA, snRNAs$
$R$. $RNA$ polymerase-$III$	$III$. $hnRNA$

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Match the following columns:
Column-$I$ (Enzyme) Column-$II$ (Product)
$P$. $RNA$ polymerase-$I$ $I$. $rRNA$ $(18S, 28S, 5.8S)$
$Q$. $RNA$ polymerase-$II$ $II$. $tRNA, 5S rRNA, snRNAs$
$R$. $RNA$ polymerase-$III$ $III$. $hnRNA$

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