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You Are On Multi Choice Question Bank SET 1519

75951. To select cholera-causing bacterium, Vibrio cholerae, the pH of the medium is maintained at a pH of





75952. For the selection of endospore-forming bacteria, a mixed culture can be heated at





75953. The concentration of agar to obtain semi solid media is





75954. Which of the following bacteria dies quickly after drying?





75955. Mac-Conkey medium is an example of





75956. Pseudomonas aeruginosa forms a blue water soluble pigment called





75957. Agar is used for solidifying culture media because





75958. For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at





75959. A disease producing species occurring in a mixed culture can often be selected on the basis of its





75960. Important example(s) of enriched medium/media is/ are




75961. Cell counting can be carried out by





75962. Which of the following techniques may be performed quantitatively to determine the number of bacteria of a particular type?





75963. Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited.





75964. Which of the following problem makes it impossible to satisfy all of Koch's postulates?





75965. A medium containing crystal violet dye plus sodium deoxycholate will allow





75966. Which of the following bacteria can grow in alkaline pH?





75967. All bacteria that inhabit the human body are





75968. 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





75969. Which of the following methods is most likely to be quantitative?





75970. Which of the following hint(s) suggest/s that a given specimen is likely to contain anaerobic bacteria?





75971. Viable plate count can be obtained using





75972. In the pour plate method, the mixed culture is diluted directly in tubes of





75973. Treponema species from human oral cavity can be selected by using





75974. 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





75975. Peptone water and nutrient broth are





75976. Stuart's transport medium is used for transport of specimen containing





75977. Plate counts are often reported as





75978. The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as





75979. Selective media facilitate growth of only one kind of organism. Saboraud medium is used to selectively isolate





75980. Which of the following bacteria can grow in acidic pH?





75981. Cell size and cell number can be measured using





75982. Which of the following is used for the proper maintenance and preservation of pure cultures?





75983. In the process of freeze drying, a dense cell suspension is placed in small vials and is frozen at





75984. The solidifying agent commonly used in preparation of media is/are





75985. Area is expressed in-units





75986. A foundation in the form of thick reinforced concrete slab covering.The entire area of bottom of the structure is known as





75987. Volume of bucket is given by:





75988. Area of equilateral triangle is:





75989. The thedolite is an instrument used for measuring very accurately





75990. The most toxic exotoxin is





75991. Which of the following species of Clostridium is predominantly sacchrolytic?





75992. Stormy clot reaction is useful in identification of





75993. Food poisoning strains of Clostridium perfringens belong to





75994. Reddening of meat in cooked meat broth is produced by





75995. Clostridium botulinum food poisoning is due to





75996. Drumstick appearance is characteristic of





75997. Blackening of meat in cooked meat broth is through





75998. Typical drumstick appearance of bacilli is generally seen in





75999. Which of the following(s) is/are obligate anaeorbes?





76000. Which of the following types of Clostridium perfringens produces alpha toxin most abundantly?





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