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Free download in PDF Culture Media Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams of Biotechnology, Biochemistry, Botany etc. These short solved questions or quizzes are provided by Gkseries.
(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
(22)
Which of the following is used as a solidifying agent for media?
[A]
Agar
[B]
Yeast extract
[C]
Beef extract
[D]
Peptone
(23)
Which device is used to pick a single bacterial cell from a mixed culture?
[A]
Micromanipulator
[B]
Micropipette
[C]
Microscope
[D]
Microprobe
(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
(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
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