DNA

• what does DNA contain

  all of an organisms genetic material -(the chemical instructions it needs to grow and develop)
• what is DNA arranged into

  chromosomes
• what are chromosomes 


  long molecules of coiled up DNA.

  the DNA is is divided into small sections called genes
• DNA is a...

  • double helix
• what makes DNA a polymer 


  each of the two DNA strands are made up of lots of nucleotides joined together in a long chain- this makes DNA a polymer
• what is a base

  each nucleotide contains a small molecule called a base
• how many bases does DNA have

  4
• what are the complementary base pairs

  A and T, C and G
• what keeps the DNA strands tightly wound together


  each base forms cross links to a base on the other strand
• what do nucleotides contain

  • a sugar
  • a phosphate group
  • a base
• which part of the molecule varies

  the base on each nucleotide
• what is the base attached to


  the sugar
• what are polymers


  long complex molecules composed of long chains of monomers joined together
• what are monomers


  small basic molecular units
• DNA is a

  polymer made up of nucleotide monomers