Question Detail

MIC 121 Laboratory safety and ethics in microbiology Objective Question
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Question

Which of the following is considered an incorrect practice in aseptic technique due to an instant contamination risk?
Options
A Cooling the inoculation loop for several seconds before use.
B Keeping vessels open for the shortest possible time.
C Placing stoppers or caps face-down on the bench surface.
Correct Answer
D Confirming all media and glassware are sterile before use.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 6, under 'Aseptic Technique,' states: 'Never rest lids down - Do not place stoppers or caps face-down on the bench surface — instant contamination risk.'

Hint

Consider what happens when a sterile surface comes into direct contact with a non-sterile one.

Question Info

Course: MIC 121
Topic: Laboratory safety and ethics in microbiology
Type: Objective
Difficulty: Not specified
Question 555 of 984
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