Culture Media Quiz | Culture Media Objective Type Questions and Answers

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Questions
21 The isolation of gonorrhea-causing organism, Neisseria gonorrhoeae by the use of certain antibiotics in media is an example of which of the following?
A Selective media
B Assay media
C Differential media
D Enriched media

Answer: Selective media
22 Which of the following is used as a solidifying agent for media?
A Agar
B Yeast extract
C Beef extract
D Peptone

Answer: Agar
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23 Which device is used to pick a single bacterial cell from a mixed culture?
A Micromanipulator
B Micropipette
C Microscope
D Microprobe

Answer: Micromanipulator
24 Nichrome loop wire is used in which of the following techniques?
A Streak-plate
B Pour-plate
C Spread-plate
D Roll-tube technique

Answer: Streak-plate
25 Which of the following is a function of cryoprotective agents?
A to trap the liquid nitrogen
B for long-term preservation of cultures
C prevents formation of ice
D prevents cell damage due to ice crystal formation

Answer: prevents cell damage due to ice crystal formation
26 Roll-tube technique is used to isolate ___________
A Stringent Anaerobes
B Facultatives
C Aerobes
D None Of These

Answer: Stringent Anaerobes
27 An outbreak of sepsis caused by Staphylococcus aureus has occurred in the newborn nursery. You are called upon to investigate. According to your knowledge of the normal flora, what is the most likely source of the organism?
A Throat
B Colon
C Nose
D none of the above

Answer: Nose
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