growing bacteria in the lab

Question 1

how can an uncontaminated culture of microorganisms be grown?

Answer 1

using sterilised petri dishes and agar. you sterilise the innoculating loop before use fix the lid of the petri dish to prevent unwanted microorganisms getting in.

Question 2

what are uncontaminated cultures of microorganisms needed for?

Answer 2

they are needed for investigating the action of disinfectants and antibiotics.

Question 3

how do u reduce the likelihood of pathogens growing that might be harmful to humans?

Answer 3

cultures should be incubated at a maximum temp of 25ºC in schools and colleges.