Aseptic Techniques (AQA A-Level Biology): Quizzes
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Practise the questions
9 questions from this quiz
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Practise the questions
9 questions from this quiz
What is the main purpose of using aseptic techniques in microbiology experiments?
What is the main purpose of using aseptic techniques in microbiology experiments?
To prevent contamination by unwanted microbes
What is an inhibition zone in antimicrobial testing?
What is an inhibition zone in antimicrobial testing?
Clear area where bacterial growth prevented
Why is a Bunsen burner used in the workspace during aseptic techniques?
Why is a Bunsen burner used in the workspace during aseptic techniques?
Creates convection currents drawing microbes away
Why are agar plates inverted during incubation?
Why are agar plates inverted during incubation?
To prevent condensation dripping on culture
Why are plates incubated at 25°C rather than 37°C?
Why are plates incubated at 25°C rather than 37°C?
To prevent pathogenic bacteria growth
What is the purpose of flaming a wire loop before transferring bacteria?
What is the purpose of flaming a wire loop before transferring bacteria?
To kill microorganisms on the equipment
What does a larger inhibition zone indicate about an antimicrobial substance?
What does a larger inhibition zone indicate about an antimicrobial substance?
It is more effective
Why should agar plates not be completely sealed during incubation?
Why should agar plates not be completely sealed during incubation?
Prevents oxygen entry, encourages anaerobes
How should a multidisc antibiotic ring be handled when placing it on the agar plate?
How should a multidisc antibiotic ring be handled when placing it on the agar plate?
By its centre with sterile forceps