AQA GCSE Biology

Revision Notes

1.1.7 Culturing Microorganisms

Binary Fission

  • Bacteria multiply by a type of simple cell division known as binary fission
  • In the right conditions, a bacterial cell prepares to divide by replicating its genetic material before it increases in size. A copy of each piece of circular DNA moves to each end of the cell before the cytoplasm divides, and new cell walls form around each daughter cell


Binary fission in bacteria, IGCSE & GCSE Biology revision notesEach division of one cell produces two cells, so the number of cells increases by a power of 2 each time binary fission occurs


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