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CELLS (Ri Tong) - Coggle Diagram

- - - - Organisms that consist of only one cell
      - E.g.
        
        Amoeba
        
        Protozoa
  - - - Organelles are groups of complex substances in a cell which carry out specific functions within the cell.
  - - - Animal cells do not have the rigid cellulose cell wall to keep them in a specific shape.
- - - - Structure
        
        Forms a boundary between cytoplasm and the outside of the cell.
        
        A semi-(or partially or selectively) permeable membrane which allows certain substances to pass through only.
      - Function
        
        Controls the movement of substances in and out of the cell.
    - - Function
        
        The 'control centre' as it controls all the activities in a cell such as growth and repair.
      - Structure
        
        Contains hereditary materials called chromosomes which are made up of DNA. The information that DNA contains is passed from one generation to the next.
    - - Structure
        
        Gel-like fluid in which many organelles and dissolved chemicals are found.
        
        Mainly made up of water.
      - Function
        
        It is where most chemical reactions take place.
    - - Structure
        
        Membrane bound bubbles
        
        Animal cells have small and numerous vacuoles.
        
        Plant cells have one large central vacuole.
      - Function
        
        In animal cells, vacuoles store dissolved nutrients and mineral salts
        
        In plant cells, it is filled with cell sap which stores nutrients and mineral salts. It also provides turgidity to the cell by pushing the cytoplasm outward against the cell wall.
  - - - Structure
        
        Fully permeable
        
        Contains cellulose
      - Function
        
        Gives plant cells a regular shape
        
        Protects plant cells from injury