• Question: does dna have cells and if so how many cells are there and what are they made up of?

    Asked by ells8 to clairemarieroberts, Faye, Martin, Mus, Pete on 23 Apr 2012.
    • Photo: Pete Etchells

      Pete Etchells answered on 23 Apr 2012:

      Hi ells, and thanks for the question. DNA itself is not made up of cells; cells are much bigger structures that you find DNA in. In fact, if you took all of the DNA inside a single cell and stretched it out from end to end, it would measure 2 meters!

      DNA (which is short for deoxyribonucleic acid – bit of a mouthful!) is bascially a really big and complex type of molecule that’s made up of a repeating unit called a nucleotide. Nucleotides are made of sugars and phosphates, which themselves are made up of carbon, oxygen, hydrogen and phosphate molecules. Hope that helps!