Describe the structure of DNA in the 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.To stretch a student in an oxbridge interview prep session, I would provide information I have learnt about DNA structure in my 1st year university lectures to introduce new content and ask questions about this content. This is often what happens in an Oxbridge interview and so would be good practice.