Topic 1.5: Origins of cells

Understandings

• • 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.

Applications and Skills:

Application:

Evidence from Pasteur’s experiments that spontaneous generation of cells and organisms does not now occur on Earth.