In eukaryotic cell transcription,$RNA$ splicing and $RNA$ capping take place inside the

What are the functions of $(i)$ methylated guanosine cap,$(ii)$ poly-$A$ tail in a mature $mRNA$?

Given below is the sequence of the coding strand of $DNA$ in a transcription unit: $5' - AATGCAGCTATTAGG - 3'$. Write the sequence of $(a)$ its complementary strand and $(b)$ the $mRNA$.

Which type of $RNA$ is transcribed by $RNA$ polymerase $III$?

Which of the following statements are correct with reference to a transcription unit?
$A$. $A$ transcription unit in $DNA$ is defined primarily by three regions: promoter, structural gene and terminator.
$B$. The promoter is said to be located towards the $5'$-end of the structural gene.
$C$. The promoter is a $DNA$ sequence that provides binding site for $RNA$ polymerase.
$D$. The promoter defines the template and coding strands.
$E$. The terminator is located towards the $3'$-end of the coding strand and it defines the end of the process of transcription.
Choose the correct answer from the options given below:

Define the following terms: $Cistron$ and $Terminator$.