Discussion
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- Question
For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at
Options- A. 6.35
- B. 5.35
- C. 4.35
- D. 5.75
- Correct Answer
- 5.35
- 1. Pseudomonas aeruginosa forms a blue water soluble pigment called
Options- A. pyocyanin
- B. chlororaphin
- C. pyoverdin
- D. ?-carotene Discuss
- 2. Which of the following bacteria dies quickly after drying?
Options- A. Treponema pallidium
- B. Mycobacterium tuberculosis
- C. Staphylococcus aureus
- D. Pseudomonas aeruginosa Discuss
- 3. The cocci which forms a bunch and irregular pattern are
Options- A. Staphylococci
- B. diplococci
- C. Tetracocci
- D. Streptococci Discuss
- 4. Genetic system is located in the prokaryotes in
Options- A. nucleoid
- B. chromatin
- C. nuclear material
- D. all of these Discuss
- 5. Which of the following has peptidoglycan as a major constituent of cell wall?
Options- A. Gram-negative bacteria
- B. Gram-positive bacteria
- C. Fungi
- D. None of these Discuss
- 6. A medium containing crystal violet dye plus sodium deoxycholate will allow
Options- A. gram (-)ve intestinal bacteria to grow
- B. gram (+)ve intestinal bacteria to grow
- C. aquatic bacteria to grow
- D. none of these Discuss
- 7. Which of the following problem makes it impossible to satisfy all of Koch's postulates?
Options- A. Microorganism causes serious symptoms in humans
- B. Microorganism cannot be isolated in pure culture
- C. Species of microorganism is in question
- D. Genes from the microorganism cannot be amplified by PCR Discuss
- 8. Mac-Conkey medium is an example of
Options- A. transport medium
- B. enrichment medium
- C. differential medium
- D. all of these Discuss
- 9. The concentration of agar to obtain semi solid media is
Options- A. 1.5-20%
- B. 0.5% or less
- C. >10%
- D. >10%but<20% Discuss
- 10. Viable plate count can be obtained using
Options- A. Spread plate method
- B. Pour plate method
- C. both (a) and (b)
- D. Hemocytometer Discuss
Cell Cultures and Characteristics problems
Search Results
Correct Answer: pyocyanin
Correct Answer: Treponema pallidium
Correct Answer: Staphylococci
Correct Answer: all of these
Correct Answer: Gram-positive bacteria
Correct Answer: gram (-)ve intestinal bacteria to grow
Correct Answer: Microorganism cannot be isolated in pure culture
Correct Answer: differential medium
Correct Answer: 0.5% or less
Correct Answer: both (a) and (b)
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