• Created by: Z1574
  • Created on: 29-12-16 15:31
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  • Organelles
    • Plasma Membrane
      • found on surface of animal cells and just inside cell wall of plant cells
      • It is mainly made up of lipids and proteins
      • Its function is to: regulate the movement of substances into and out of the cell.
      • Its also has receptor molecules on it, which allows to respond to chemicals like hormones
    • Cell Wall
      • Its a rigid structure that surrounds plant cells
      • Its mainly made of the carbohydrate- cellulose
      • Its function is to support plant cells
    • Nucleus
      • Its a large organelle surrounded by a nuclear envelope (double membrane) which contains many pores
        • The pores allow allow substances (e.g. RNA) to move between the nucleus and the cytoplasm.
      • It contains chromatin (which is made from DNA and proteins) and often a structure - nucleolus
        • The nucleolus makes ribosomes
      • Its function is to control the  cell's activities (by controlling the transcription of DNA)
        • DNA contains instructions to make proteins
    • Lysosome
      • Its a round organelle surrounded by a membrane but with no internal structures
      • It contains digestive enzymes. These are kept separate from the cytoplasm by surrounding membrane
      • they digest invading cells or break down worn out components of the cell
    • Ribosome
      • A very small organelle that either floats free in the cytoplasm or attached to RER
      • Its made of proteins and RNA but NOT surrounded by a membrane
      • Its the site where proteins are made
    • Rough Endoplasmic Reticulum
      • A system of membranes enclosing a fluid-filled space
      • The surface is covered with ribosomes
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