BEER AND WINE QUIZ

The solidifying agent commonly used in preparation of media is/are

silica gel

both (a) and (b)

none of these

agar

TRUE ANSWER : ?
YOUR ANSWER : ?

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

8.5

8.90

3.5

6.79

TRUE ANSWER : ?
YOUR ANSWER : ?

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

5.75

6.35

4.35

5.35

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Dilution and plating

Gram staining

None of these

Wet mount

TRUE ANSWER : ?
YOUR ANSWER : ?

Treponema species from human oral cavity can be selected by using

incubation temperature

cell size and motility

all of these

pH of the medium

TRUE ANSWER : ?
YOUR ANSWER : ?

All bacteria that inhabit the human body are

phototroph

chemolithotrophs

heterotrophs

autotrophs

TRUE ANSWER : ?
YOUR ANSWER : ?

Cell counting can be carried out by

All of these

plate counting

direct microscopic count using petroffhansser counting chamber

membrane filter count

TRUE ANSWER : ?
YOUR ANSWER : ?

A medium containing crystal violet dye plus sodium deoxycholate will allow

gram (-)ve intestinal bacteria to grow

none of these

aquatic bacteria to grow

gram (+)ve intestinal bacteria to grow

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Both (a) and (b)

Pour plate

Streak plate technique

Spread plate

TRUE ANSWER : ?
YOUR ANSWER : ?

Plate counts are often reported as

thousands/ml

Both (a) and (b)

cfu

cfu/ml

TRUE ANSWER : ?
YOUR ANSWER : ?

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