CELL CULTURES AND CHARACTERISTICS QUIZ

Cell counting can be carried out by

All of these

membrane filter count

plate counting

direct microscopic count using petroffhansser counting chamber

TRUE ANSWER : ?
YOUR ANSWER : ?

Plate counts are often reported as

Both (a) and (b)

cfu/ml

thousands/ml

cfu

TRUE ANSWER : ?
YOUR ANSWER : ?

Mac-Conkey medium is an example of

transport medium

all of these

differential medium

enrichment medium

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following techniques may be performed quantitatively to determine the number of bacteria of a particular type?

Pour plate

Streak plate technique

Both (a) and (b)

Spread plate

TRUE ANSWER : ?
YOUR ANSWER : ?

Stuart's transport medium is used for transport of specimen containing

Vibrio cholerae

Shigella

Neisseria gonorrhoeae

Salmonella

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following bacteria can grow in alkaline pH?

Salmonella

Shigella

Vibrio cholerae

Lactobacilli

TRUE ANSWER : ?
YOUR ANSWER : ?

All bacteria that inhabit the human body are

heterotrophs

autotrophs

chemolithotrophs

phototroph

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following problem makes it impossible to satisfy all of Koch's postulates?

Microorganism cannot be isolated in pure culture

Species of microorganism is in question

Genes from the microorganism cannot be amplified by PCR

Microorganism causes serious symptoms in humans

TRUE ANSWER : ?
YOUR ANSWER : ?

The concentration of agar to obtain semi solid media is

>10%but<20%

1.5-20%

>10%

0.5% or less

TRUE ANSWER : ?
YOUR ANSWER : ?

Peptone water and nutrient broth are

enriched media

none of these

basal media

selective media

TRUE ANSWER : ?
YOUR ANSWER : ?

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