Describe the structure of the DNA of a eukaryotic cell

DNA is a double stranded helix. Each strand is held together by complementary base pairs or nucleotides. A nucleotide consists of a base, a deoxyribose sugar and a phosphate. The bases are A, T, C and G. G and C are a complementary base pair and A and T form the other. These pairs are held together by hydrogen bonds. A sugar-phosphate backbone is also formed by bonding between the deoxyribose of one nucleotide and the phosphate of the next nucleotide. In a eukaryotic cell, DNA is found in linear chromosomes within the nucleus. Small sections of DNA within these chromosomes are called genes and code for proteins.

AE
Answered by Annie E. Biology tutor

4488 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Name two organelles that are present in a plant cell that are not present in an animal cell and state their functions?


What is the difference between mitosis and meiosis?


Describe the process of speciation.


Discuss how your body responds to a stimuli


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:

© 2025 by IXL Learning