Simple IB Biology

#1.5 Cell theory - The origin of cells


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In this sub-unit of IB biology, we are going to explain the shortest part of unit 1, we are going to understand the concepts of:

  • Cells can only be formed by division of pre-existing cells
  • The first cells must have arisen from non-living material
  • The origin of eukaryotic cells can be explained by the endosymbiotic theory
  • ...more
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    Simple IB BiologyBy Amirali Ghajari