Binary Fission

• Describe binary fission in bacteria.

  • the bacteria cell replicates its circular DNA and plasmids
  • which move into opposite cell poles
  • the cell elongates and pinches inwards at the centre
  • the cytoplasm divides to form two daughter cells
• Explain how two environmental variables could be changed to increase the growth rate of bacteria cells.

  1. increased concentration of oxygen = increased respiration
  2. increased temperatures = increased enzyme activity