Describe the role of a ribosome in the production of a polypeptide

mRNA from the nucleus binds to a ribosome which is either free in the cytoplasm or associated with the rough ER. The ribosome binds at the 5' end and scans to the start codon (AUG). The ribosome allows tRNA to associate with the mRNA by specific base pairing between codons and anti-codons. It then catalyses the formation of peptide bond between the amino acids bound to the tRNA molecules. The ribosome then moves along the mRNA allowing more amino acids to be added to the polypeptide, until a stop codon is encountered and translation is terminated.

Answered by Josh M. Biology tutor

7179 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe Gaseous exchange in the alveoli of the lungs


How does chemiosmosis work?


How is selective reabsorption acheived in the kidneys?


(i) What is the net agin of ATP in Glycolysis? (2 marks) (ii) Where is ATP used in Glycolysis?( 1marks)


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