28 JANUARY 2021 CURRENT AFFAIRS QUIZ

Mac-Conkey medium is an example of

differential medium

enrichment medium

transport medium

all of these

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YOUR ANSWER : ?

Which of the following is used for the proper maintenance and preservation of pure cultures?

All of these

Preservation by lyophilization

Preservation by overlaying cultures with mineral oil

Periodic transfer to fresh media

TRUE ANSWER : ?
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Stuart's transport medium is used for transport of specimen containing

Salmonella

Vibrio cholerae

Neisseria gonorrhoeae

Shigella

TRUE ANSWER : ?
YOUR ANSWER : ?

Cell counting can be carried out by

plate counting

membrane filter count

All of these

direct microscopic count using petroffhansser counting chamber

TRUE ANSWER : ?
YOUR ANSWER : ?

Treponema species from human oral cavity can be selected by using

all of these

pH of the medium

incubation temperature

cell size and motility

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YOUR ANSWER : ?

When a substance is added to a liquid medium which inhibits the growth of unwanted bacteria and favors the growth of wanted bacteria, it is known as

selective medium

enriched medium

differential medium

enrichment medium

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following bacteria can grow in acidic pH?

Salmonella

Shigella

Vibrio cholerae

Lactobacilli

TRUE ANSWER : ?
YOUR ANSWER : ?

Peptone water and nutrient broth are

enriched media

none of these

basal media

selective media

TRUE ANSWER : ?
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Pseudomonas aeruginosa forms a blue water soluble pigment called

pyoverdin

chlororaphin

β-carotene

pyocyanin

TRUE ANSWER : ?
YOUR ANSWER : ?

Important example(s) of enriched medium/media is/ are

Loeffler's serum slope

Bordet-gengou medium

Blood agar

All of these

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YOUR ANSWER : ?

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