Highlight 3 differences between mRNA and DNA molecules

  1. mRNA is only single stranded, whereas DNA is a double stranded molecule 2. mRNA has Uracil instead of thymine which is found in DNA 3. mRNA contains no introns as they have been spliced out, however DNA contains both exons and introns (extra points: mRNA is much shorter than DNA; mRNA has a ribose sugar in it's backbone, whereas DNA has a deoxyribose sugar)
SA
Answered by Safia A. Biology tutor

4197 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How is the liver adapted to regulating blood component concentrations?


Tetrodotoxin (TTX) is a chemical found in pufferfish which binds to voltage-gated sodium channels causing inactivation via a conformational change. Poisoning can result in paralysis leading to death. How might this occur? (4 marks)


What is the difference between osmolarity and osmolality?


Describe the function of ribosomes in protein synthesis.


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