Organisation and composition

Organisation and composition

1. Levels of organisation

   • Non living (abiotic)
     • Atom level
       • Molecule level
         • Macromolecule level
           • Organelle level
   • Living (biotic)
     • Cellular level
       • Multicellular level
         • Tissue sublevel
         • Organ sublevel
         • Organ system sublevel

2. Cell characteristics

   • Two types
     • Prokaryotic
       • No nucleous. Only found in bacteria
     • Eukaryotic
       • They have a nucleous. Found in all other living things
         • Animal
         • Plant

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