The codon sequence on the coding strand of a transcription unit is $ATG \ GUG \ AGC \ TAC \ GCG$. What will be the codon sequence on the $mRNA$ formed from the template strand?

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

Which of the following is not a part of a transcription unit in $DNA$?

In a eukaryotic cell,how many types of $RNA$ and $RNA$ polymerases are found,respectively?

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:

Given below are two statements, one is labelled Assertion $(A)$ and the other is labelled as Reason $(R)$.
Assertion $(A) :$ In eukaryotes, primary transcripts $(hnRNA)$ contain both exons and introns, and introns are non-functional.
Reason $(R) :$ In bacteria, the $mRNA$ does not require any processing, and transcription and translation take place in the same compartment.
In the light of the above statements, choose the most appropriate answer from the options given below $:$