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biology (Cells (Unicellular organisms (There are 2 main unicellular…

- - - - What both cells have
        
        Nucleus
        
        This controls the cell and contains genetic information.
        
        Mitochondria
        
        These respire for the plant - they transfer energy for the organism
        
        Cytoplasm
        
        A jelly like substance inside the cell which is where chemical reactions take place
        
        Cell membrane
        
        A barrier for the cell. It control what comes in and out of the cell
      - What plant cells have
        
        Vacuole
        
        A sac that contains a liquid called cell sap. It feeds the plant and keeps it rigid
        
        A cell wall
        
        A wall around the cell that protects it and keeps its shape
        
        chloroplasts
        
        Where photosynthesis happens. They contain a substance called chlorophyll that traps sunlight.
  - - - Nerve cell
        
        Carries electrical impulses around the boby
        
        They are long and thin for transmitting impulses quickly to one another
      - Sperm cell
        
        The male gamete that contains father's genetic material
        
        Has a sleek tail for swimming. Contains a lot of mitochondria for transferring energy.
      - Leaf cell
        
        It photosynthesises for the plant
        
        It's well adapted to it's function because it has a large surface area for absorbing as much sunlight as possible
      - Root hair cell
        
        absorbs water for the plant
        
        Has large surface area to cause as much osmosise as possible
        
        osmosis = the diffusion of water
      - Red blood cell
        
        Transport oxygen around the body
        
        Large surface area for absorbing as much oxygen as possible
  - - - Amoeba
        
        An amoeba is a unicellular organism with no fixed shape. They look a bit like a blob of jelly. They live in fresh water, salt water, wet soil and even animals
        
        They eat small pieces of bacteria, plant cells and algae
        
        They have different components that do different jobs
        
        Contractile vacuole
        
        Removes water and waste
        
        Nucleus
        
        Controls the cell
        
        Food vacuole
        
        Digests the food and makes energy out of it
        
        Cell membrane
        
        Controls what comes in or out of the cell
        
        Pseudopod
        
        Thick liquid that helps catch prey.
        
        However, there is a species of amoeba called the brain-eating amoeba. If it enters your body it will slowly eat away at your brain, almost always resulting in death
      - Euglena
        
        A euglena is like a plant cell. They live is water
        
        They don't normally eat but instead they photosynthesise
        
        They have components that resemble a plant cell
        
        They have the nucleus, a cell membrane, and a contractile vacuole but they have other components as well
        
        The eye spot
        
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        Flagellum
        
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        Chloroplast
        
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