DNA
Biology: Cambridge International GCSE Supplement, topic 4.1.4
DNA
The genetic material of an organism is made up of a molecule called DNA. This contains the information for the building and functioning of each cell.
Double-helix
- DNA is double helix polymer, which means it is a polymer (a large molecule made up of many subunits) made up of two strands forming a twisted, ladder shape.
Nucleotide
- DNA is made out of units called nucleotides.
- Each nucleotide is made up of a base, a phosphate and a sugar.
Test yourself on DNA
Nucleotides are made up of three components. Which one of these is not a component?
DNA polymers form what shape?