Discussion
Home ‣ Microbiology ‣ Growth and Nutrition of Bacteria Comments
- Question
Implicit factors
Options- A. depend on developing microflora
- B. can be synergistic
- C. both (a) and (b)
- D. none of the above
- Correct Answer
- both (a) and (b)
- 1. The term obligate anaerobe refers to an organism that
Options- A. doesn't use oxygen but tolerates it
- B. is killed by oxygen
- C. uses oxygen when present or grows without oxygen when oxygen is absent
- D. prefers to grow without oxygen Discuss
- 2. Which of the following has more tolerance for acidic pH (lower pH)?
Options- A. Yeast and moulds
- B. Bacteria
- C. E. coli
- D. None of these Discuss
- 3. A culture broth tube was very turbid at the bottom of the tube but clear at the top of the tube indicating that the
Options- A. broth is sterile
- B. organism can tolerate oxygen
- C. organism cannot produce superoxide dismutase and/or catalase
- D. organism should be grown in an anaerobic chamber Discuss
- 4. A culture broth tube was very turbid at the surface but clear throughout the rest of the tube indicating that the
Options- A. organism are aerobes
- B. organism should be grown in an anaerobic chamber
- C. organism cannot produce superoxide dismutase and/or catalase
- D. organism cannot tolerate oxygen Discuss
- 5. The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of
Options- A. Liebig's law of the minimum
- B. Shelford's law of tolerance
- C. quorum sensing
- D. Heisenberg's principle of uncertainty Discuss
- 6. The reproduction by budding occur in
Options- A. Rhodopseudomonas acidophila
- B. Hyphomicrobium vulgare
- C. Bacillus subtilis
- D. Both (a) and (b) Discuss
- 7. Microaerophilic bacteria are those which require
Options- A. 21 % oxygen for growth
- B. low levels of oxygen for growth (lesser than O2 present in atmosphere)
- C. oxygen for activation of enzymes
- D. none of the above Discuss
- 8. An organism is completely dependent on atmospheric O2 for growth. This organism is
Options- A. osmotolerant
- B. acidophile
- C. facultative anaerobe
- D. obligate aerobe Discuss
- 9. The period between inoculation of bacteria in a culture medium and beginning of multiplication is known as
Options- A. stationary phase
- B. log phase
- C. lag phase
- D. decline phase Discuss
- 10. An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is
Options- A. osmotolerant
- B. acidophile
- C. neutrophile
- D. aerotolerant anaerobe Discuss
Growth and Nutrition of Bacteria problems
Search Results
Correct Answer: is killed by oxygen
Correct Answer: Yeast and moulds
Correct Answer: organism cannot produce superoxide dismutase and/or catalase
Correct Answer: organism are aerobes
Correct Answer: quorum sensing
Correct Answer: Both (a) and (b)
Correct Answer: low levels of oxygen for growth (lesser than O2 present in atmosphere)
Correct Answer: obligate aerobe
Correct Answer: lag phase
Correct Answer: acidophile
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