Cell Cultures and Characteristics Questions

• Which of the following bacteria dies quickly after drying?
• Pseudomonas aeruginosa forms a blue water soluble pigment called
• For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at
• A medium containing crystal violet dye plus sodium deoxycholate will allow
• Which of the following problem makes it impossible to satisfy all of Koch's postulates?
• Mac-Conkey medium is an example of
• The concentration of agar to obtain semi solid media is
• Viable plate count can be obtained using
• Selective media facilitate growth of only one kind of organism. Saboraud medium is used to selectively isolate
• Stuart's transport medium is used for transport of specimen containing
• Which of the following techniques may be performed quantitatively to determine the number of bacteria of a particular type?
• In the process of freeze drying, a dense cell suspension is placed in small vials and is frozen at
• In the pour plate method, the mixed culture is diluted directly in tubes of
• For the selection of endospore-forming bacteria, a mixed culture can be heated at
• To select cholera-causing bacterium, Vibrio cholerae, the pH of the medium is maintained at a pH of
• Important example(s) of enriched medium/media is/ are
• Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited.
• Agar is used for solidifying culture media because
• The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as
• Cell counting can be carried out by