culturing microorganisms

• binary fission


  bacterial cell division
• Why must Petri dishes and culture media be sterilised before use?

  to avoid contamination
• how to sterilise an inoculating loop?

  bunsen burner flame
• why must you store petri dishes upside down?

  to prevent condensation falling into the agar
• Why must the lid on a petri dish be secured?

  • microorganisms from the air may contaminate the culture