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Culture Growth B1

QuestionAnswer
What are the four stages of the agar jelly experiment? • Hot agar jelly is poured in to petri dish. • The jelly cools and sets and inoculating loops are used to infect the culture with microorganisms. • Paper covered with different types of anti-biotics. • Resistant strands continue to multiply.
What is the purpose of the agar plate experiment? To see how microorganisms react to different types of anti-biotics and disinfectants.
What does the agar jelly contain? The right amount of minerals, carbohydrates, proteins and vitamins for the microorganisms to grow.
How is the inoculating loop sterilised? It is passed through a flame.
Why is it sterilised? Because bacteria need to be killed so they don't contaminate the culture.
Why does the petri dish have a lid on? To stop air born microorganisms from contaminating the culture.
Why are the cultures kept at 25 degrees? Because the microorganisms grow best at this temperature.
Created by: GuyBrazier