Genetic code and cell function

Provides a mindmap of key terms taken from markscheme.

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  • Created by: Sara
  • Created on: 21-03-13 19:07
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  • Genetic Code and Cell Function
    • Transcription
      • DNA unzips
      • Genes exposed
      • RNA nucleotides align
      • RNA polymerase
      • mRNA formed
      • U-A, A-T, C-G, G-C
    • Translation
      • mRNA attaches to ribosome
      • tRNA brings amino acid
      • tRNA attached to specific amino acid
      • tRNA binds to mRNA - complementary
      • Peptide bond formed
      • mRNA sequence determines sequence of amino acids
    • mRNA
      • DNA
        • transcribed
        • long term
        • template
      • leaves nucleus
      • translated
      • short term
    • tRNA
      • Anti codon to codon on DNA
      • Ribosomes on DNA translate
      • Start codon
        • Protein attaches to DNA as promoter
        • Allows RNA to bind
      • Stop codon
        • Marks end of gene
        • Does not code for amino acid
      • RNA interference
        • RNA combines with mRNA
        • stops translation
        • stops protein synthesis
    • Mutations
      • Changes DNA
      • Makes different mRNA
      • Transcription
      • Different tRNAs line up
      • Translation
      • Different enzyme/protein
    • Enzymes
      • Globular protein
      • DNA provides primary structure
      • Secondary - alpha helix, beta pleated sheet
      • Tertiary - folding/bonding, 3D structure

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