outline the steps of DNA transcription


RNA polymerase is the enzyme used to bind the DNA section of interest and recruit the free bases needed to form a new mRNA strand. DNA is transcribed on to an mRNA strand because it is too large to leave the nucleus and mRNA is single stranded with the ability to leave the nucleus and enter the cytoplasm of the cell, where translation can occur (the production of polypeptide chains from messenger RNA using ribosomes and tRNA).The antisense strand is read (5' to 3' direction) and RNA polymerase and forms a complementary mRNA sequence with this strand. The sense strand is NOT transcribedthe new mRNA strand leaves the nucleus and enters the cytoplasm where it is used by ribosomes (that either roam the cell freely or are attached to the rough endoplasmic reticulum)for translation.

AA
Answered by Adaeze A. Biology tutor

3406 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

A guanine is swapped for a thymine in a gene sequence. Explain how this may alter the function of the protein it translates.


What is the Krebs cycle?


Describe the sequence of events which allows information to pass from one neurone to the next neurone across a cholinergic synapse. (6 marks)


In ecology, what does the phrase 'carrying capacity' refer to and what factors may determine it?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning