Biology

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  • SCIENCE- biology
    • A group of cells makes up a tissue e.g a heart mucsle
    • A group of tissues makes up an organ e.g a heart
    • A group of organs makes up a system e.g circulatory system
    • A group of systems makes up an organism e.g humans
    • BOTH TYPES OF CELLS HAVE- Nucleus, Cytoplasm, Cell membrane, Mitrochondria
      • PLANT CELLS v ANIMAL CELLS
    • ONLY PLANT CELLS HAVE- Cell wall, Large vacuole, Chloroplasts
    • ROOT HAIR CELL IN PLANTS- A large surface area, A thin cell membrane
      • SPECIALISED CELLS
    • SPERM CELL- is an example of a specialised animal cell
    • RED BLOOD CELLS- Carries oxygen around the body. Adaptions: No nucleus,Large surface area
    • WHITE BLOOD CELLS- fight disease and some make antibodies. Adaptations- irregular shape, they can change shape to squeeze out of blood vessels and get to the site of infection.
    • SPECIALISED PLANT CELLS- each cell is filled with chloroplasts which contains chlorophyll if a plant contains many cells its meant to photosynthesise.
  • CELL ACTIVITY

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