CELL CULTURES AND CHARACTERISTICS QUIZ

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

Salmonella

Shigella

Neisseria gonorrhoeae

Vibrio cholerae

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following methods is most likely to be quantitative?

Dilution and plating

None of these

Wet mount

Gram staining

TRUE ANSWER : ?
YOUR ANSWER : ?

For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at

4.35

5.75

5.35

6.35

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

Spread plate

Both (a) and (b)

Streak plate technique

TRUE ANSWER : ?
YOUR ANSWER : ?

Plate counts are often reported as

Both (a) and (b)

cfu/ml

cfu

thousands/ml

TRUE ANSWER : ?
YOUR ANSWER : ?

Cell counting can be carried out by

plate counting

All of these

membrane filter count

direct microscopic count using petroffhansser counting chamber

TRUE ANSWER : ?
YOUR ANSWER : ?

To select cholera-causing bacterium, Vibrio cholerae, the pH of the medium is maintained at a pH of

8.5

3.5

6.79

8.90

TRUE ANSWER : ?
YOUR ANSWER : ?

In the process of freeze drying, a dense cell suspension is placed in small vials and is frozen at

-30 to -48°C

-20 to -30°C

-60 to -78°C

-48 to -58°C

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Bordet-gengou medium

All of these

Blood agar

Loeffler's serum slope

TRUE ANSWER : ?
YOUR ANSWER : ?

Cell size and cell number can be measured using

hemocytometer

coulter counter

petroff-hausser counting chamber

none of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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