During transcription,the holoenzyme $RNA$ polymerase binds to the $DNA$ strand,and the $DNA$ forms a saddle-like structure at that site. What is this sequence called?

Match the following $RNA$ polymerase enzymes with their transcribed products:

$(a) \; RNA$ polymerase $I$	$(i) \; tRNA$
$(b) \; RNA$ polymerase $II$	$(ii) \; rRNA$
$(c) \; RNA$ polymerase $III$	$(iii) \; hnRNA$

Select the correct option from the following:

Which of the following statements are correct?
$i. r-RNA$ provides the template for synthesis of proteins.
$ii. t-RNA$ brings amino acids and reads the genetic code.
$iii. RNA$ polymerase binds to promoter and initiates transcription.
$iv. A$ segment of $DNA$ coding for a polypeptide is called an intron.

Which of the following enzymes can form $RNA$ from $DNA$?

What happens during the process of capping in eukaryotic $mRNA$ processing?

The regions located upstream of the $5'$ end and downstream of the $3'$ end of a structural gene are respectively known as: