Can you describe the structure of the DNA MOLECULE?

The Dna molecule is an antiparallel double helix made up of a sugar, a phosphate group and different bases pared with each other. These basis are Adenine (A), Guanine (G), Cytosine (C) and Thymine (T) and are paired up following strict rules. As are always with Ts and Gs are always with Cs. More specifically, As are bonded to Ts by a double hydrogen bond, while Cs are linked to Gs by a triple hydrogen bond. This is what gives the DNA its shape.

SM
Answered by Sara M. Biology tutor

6406 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Give two features of DNA and explain how each one is important in the semi-conservative replication of DNA.


Describe the main evolutionary trend in digestion across the phyla: Platyhelminthes, Chordata and Annelida


What is meant by the term "tertiary structure" of a protein? Describe the forms of bonding that could be involved.


Describe the structure of a protein and how it determines its function.


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