1. Which of the following chemotherapeutic agents may affect the growth of Campylobacter jejuni?
2. To select cholera-causing bacterium, Vibrio cholerae, the pH of the medium is maintained at a pH of
3. For the selection of endospore-forming bacteria, a mixed culture can be heated at
4. The concentration of agar to obtain semi solid media is
5. Which of the following bacteria dies quickly after drying?
6. Mac-Conkey medium is an example of
7. Pseudomonas aeruginosa forms a blue water soluble pigment called
8. Agar is used for solidifying culture media because
9. For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at
10. A disease producing species occurring in a mixed culture can often be selected on the basis of its
11. Important example(s) of enriched medium/media is/ are
12. Cell counting can be carried out by
13. Which of the following techniques may be performed quantitatively to determine the number of bacteria of a particular type?
14. Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited.
15. Which of the following problem makes it impossible to satisfy all of Koch's postulates?
16. A medium containing crystal violet dye plus sodium deoxycholate will allow
17. Which of the following bacteria can grow in alkaline pH?
18. All bacteria that inhabit the human body are
19. 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
20. Which of the following methods is most likely to be quantitative?
21. Which of the following hint(s) suggest/s that a given specimen is likely to contain anaerobic bacteria?
22. Viable plate count can be obtained using
23. In the pour plate method, the mixed culture is diluted directly in tubes of
24. Treponema species from human oral cavity can be selected by using
25. 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