AS LEVEL- Biology- Basic components of living systems (Protein synthesis)

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  • Basic components of living systems (Protein synthesis)
    • Main oganelles involved
      • Ribosomes
      • RER
      • Golgi apparatus
      • Cytoskeleton
      • Vesicles
      • Nucleus
    • 2) The ribosomes on the RER makes proteins that are excreted or attached to the cell membrane. The free ribsosmes in the cytoplasm make proteins that stay in the cytoplasm
    • 3) New proteins produced at the RER are folded + processed in the RER
    • 4) They are then transported from the RER to the golgi in the vesicles
    • 5) At the golgi, the proteins may undergo further processing eg. sugar chains are trimmed or more are added
    • 6) The proteins enter more vesicles to be transported around the cell
    • 1) Proteins are made at the ribosomes


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