Explore topic-wise MCQs in Microbiology.

Which of the following bacteria can grow in acidic pH?

A medium containing crystal violet dye plus sodium deoxycholate will allow

Cell size and cell number can be measured using

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

Peptone water and nutrient broth are

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

Plate counts are often reported as

The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as

Selective media facilitate growth of only one kind of organism. Saboraud medium is used to selectively isolate

Which of the following hint(s) suggest/s that a given specimen is likely to contain anaerobic bacteria?

Viable plate count can be obtained using

In the pour plate method, the mixed culture is diluted directly in tubes of

When a substance is added to a solid medium which inhibits the growth of unwanted bacteria but permits the growth of wanted bacteria, it is known as

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

Which of the following bacteria can grow in alkaline pH?

All bacteria that inhabit the human body are

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

Cell counting can be carried out by

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

The concentration of agar to obtain semi solid media is

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

Mac-Conkey medium is an example of

Pseudomonas aeruginosa forms a blue water soluble pigment called

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

For the selection of endospore-forming bacteria, a mixed culture can be heated at

A disease producing species occurring in a mixed culture can often be selected on the basis of its

Agar is used for solidifying culture media because

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

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

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

Treponema species from human oral cavity can be selected by using

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

Which of the following chemotherapeutic agents may affect the growth of Campylobacter jejuni?

Which of the following bacteria dies quickly after drying?

Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited.