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bio revision - Coggle Diagram

- - - - organelles that contain the green pigment, chlorophyll, which absorbs light energy for photosynthesis
      - contains the enzymes needed for photosynthesis
    - - made from cellulose fibres and strengthens the cell and supports the plant
    - - filled with cell sap to help keep the cell turgid
- - - - diffusion
    - - against a concentration gradient using energy
- - - - 2 bronchi
        (held open by little pieces of cartilage)
        
        branchng bronchioles
        
        ending in tiny ALVEOLI
        (no cartilage air sacs one-cell thick )
  - - - 20% O2
      - cooler
      - less CO2
      - less H2O vapour
    - - 16% O2
      - warmer
      - more CO2
      - more H2O vapour
- - - - process : respiration