Aseptic technique (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the main purpose of aseptic techniques in microbiology?
What is the main purpose of aseptic techniques in microbiology?
To prevent contamination of cultures
At what temperature does an autoclave operate?
At what temperature does an autoclave operate?
Around 121°C
Which items are sterilised in an autoclave?
Which items are sterilised in an autoclave?
Petri dishes, culture vials & medium
How is an inoculating loop sterilised before use?
How is an inoculating loop sterilised before use?
Heated in a Bunsen burner flame
What colour should an inoculating loop glow when properly sterilised?
What colour should an inoculating loop glow when properly sterilised?
Red-hot
Why should petri dishes be kept covered as much as possible?
Why should petri dishes be kept covered as much as possible?
To avoid airborne contamination
How much should a petri dish lid be lifted when transferring microorganisms?
How much should a petri dish lid be lifted when transferring microorganisms?
Only slightly
Why are petri dishes not sealed fully airtight?
Why are petri dishes not sealed fully airtight?
Some microorganisms need oxygen
What does sealing petri dishes help to prevent?
What does sealing petri dishes help to prevent?
Pathogens escaping into environment
Why does autoclave sterilisation ensure accurate experimental results?
Why does autoclave sterilisation ensure accurate experimental results?
Only studied microorganisms will grow
How do aseptic techniques improve laboratory safety?
How do aseptic techniques improve laboratory safety?
They reduce harmful pathogen release
What type of results do aseptic techniques ensure?
What type of results do aseptic techniques ensure?
Valid and reliable results