Explain how mRNA is formed. (6 marks)

DNA helicase breaks the hydrogen bonds between the base pairs in the double-stranded DNA. RNA nucleotides then line up beside their corresponding nitrogenous base (A-T, C-G) along the template strand of the DNA (only one of the DNA strands acts as the template). RNA polymerase joins the RNA nucleotides together via condensation reactions that result in the formation of the phosphodiester bonds. Pre-mRNA is then spliced to remove introns before it is ready for translation.

Answered by Laura N. Biology tutor

1702 Views

See similar Biology A Level tutors
Illustration of a video tutorial

Need help with Biology?

One to one online tuition can be a great way to brush up on your Biology knowledge.

Have a Free Meeting with one of our hand picked tutors from the UK’s top universities

Find a tutor

Related Biology A Level answers

All answers ▸

Explain the role of auxins in the control of phototropism


Explain the principles of PCR


What is the difference between diffusion and active transport?


How do you explain the change in membrane permeability as temperature increases?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2022

Terms & Conditions|Privacy Policy