Messenger RNA (mRNA) is used during translation to form polypeptides. Describe how mRNA is produced in the nucleus of the cell. (6 marks)

This process is called transcription. In the nucleus, an enzyme helicase is used to break the hydrogen bonds between the two strands of the double helix. Only one DNA strand is used the template, which we call the template strand. Free RNA nucleotides are attracted to the exposed bases according to the base pairing rule. RNA polymerase joins the RNA nucleotides together to form pre mRNA. The pre mRNA is then spliced to remove introns.

Answered by Kirstin P. Biology tutor

3102 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe the effects of nitrogen and phosohorus fertiliser leaching into a lake


Explain what causes the Bohr shift to occur, and give one situation in which this is useful.


How does the oxygen in the air reach respiring cells in humans?


What are enzymes? What is the importance of enzymes for living beings?


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 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences