Cell Cultures and Characteristics

 

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Cell Cultures and Characteristics

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Question 1
For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at
A
6.35
B
5.35
C
4.35
D
5.75
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Question 2
Selective media facilitate growth of only one kind of organism. Saboraud medium is used to selectively isolate
A
coliform bacteria
B
gram positive bacteria
C
yeasts
D
acid fast organisms
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Question 3
Which of the following is used for the proper maintenance and preservation of pure cultures?
A
Periodic transfer to fresh media
B
Preservation by overlaying cultures with mineral oil
C
Preservation by lyophilization
D
All of the above
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Question 4
Cell counting can be carried out by
A
direct microscopic count using petroffhansser counting chamber
B
plate counting
C
membrane filter count
D
all of the above
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Question 5
Which of the following bacteria can grow in alkaline pH?
A
Shigella
B
Lactobacilli
C
Salmonella
D
Vibrio cholerae
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There are 5 questions to complete.

 

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