Question Detail

MIC 121 Laboratory safety and ethics in microbiology Objective Question
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Question

When performing aseptic technique, what is the recommended distance from a Bunsen burner within which cultures should be manipulated to exclude airborne contaminants?
Options
A Within 5-10 cm
B Within 15-20 cm
Correct Answer
C Within 25-30 cm
D The distance does not matter as long as it's near the flame.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 6, under 'Aseptic Technique,' specifies: 'Work in the flame zone - Manipulate cultures within 15–20 cm of a Bunsen burner where convection currents exclude airborne contaminants.'

Hint

The flame creates a sterile 'zone' around it due to convection.

Question Info

Course: MIC 121
Topic: Laboratory safety and ethics in microbiology
Type: Objective
Difficulty: Not specified
Question 554 of 984
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