DNA-Making Proteins B5

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  • Created by: kira
  • Created on: 22-06-11 18:37

(notes taken form the CGP revision guides)

  • DNA is a double helix of paired bases.
  • A DNA molecule has two strands coiled together in the shape of two spirals.
  • Each strand is made up of lots of small groups called "nucleotides".
  • Each nucleotide contains a small molecule called a 'base'.
  • DNA has just four different bases - adenine (A), cytosine (C), guanine (G) and thymine (T).
  • The two strands are held together by the bases, which always pair up in the same way - its always A-T and C-G. This is called base pairing.
  • DNA controls the production of proteins in a cell.
  • A gene is a section of DNA that contains the instructions for one particular protein.
  • Cells make proteins by joining amino acids together in…

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