Discussion
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- Question
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
- Correct Answer
- acidophile
- 1. Cycloserine inhibits
Options- A. alanine racemase
- B. D-alanyl - D-alanine synthetase
- C. Both (a) and (b)
- D. amidase Discuss
- 2. Vacuum packaged meats are spoiled by
Options- A. B. thermosphacta
- B. Lactobacilli
- C. Both (a) and (b)
- D. none of these Discuss
- 3. Members of which phylum of Protozoa are being considered as biological control agents for certain insects?
Options- A. Microspora
- B. Sarcomastigophora
- C. Apicomplexa
- D. all of these Discuss
- 4. Which of the following tests is used to determine the minimal lethal concentration?
Options- A. Broth dilution test
- B. Agar dilution test
- C. Dilution susceptibility tests
- D. All of these Discuss
- 5. Cephalosporin an antibiotic closely related to penicillin in structure and antibiotic activity are produced by species of
Options- A. Cephalosporium
- B. Cephalospodium
- C. Pseudomonas
- D. Bacillus Discuss
- 6. Erythromycin a broad spectrum antibiotic is obtained with the help of
Options- A. Streptomyces rimosus
- B. Streptomyces venezuelae
- C. Streptomyces erythreus
- D. Streptomyces halstedii Discuss
- 7. Which antibiotic has a beta-lactam ring?
Options- A. Cephalosporin
- B. Penicillin
- C. Tetracycline
- D. Streptomycin Discuss
- 8. Which cell type is considered to have the oldest ancestor?
Options- A. Archaea
- B. Bacteria
- C. Eukarya
- D. they all share the same ancestor Discuss
- 9. Which is the most efficient complement fixing class of antibody?
Options- A. IgE
- B. IgA
- C. IgM
- D. IgG Discuss
- 10. Which of the following is best to sterilize heat labile solutions?
Options- A. Dry heat
- B. Autoclave
- C. Membrane filtration
- D. Pasteurization Discuss
More questions
Correct Answer: Both (a) and (b)
Correct Answer: Both (a) and (b)
Correct Answer: Microspora
Correct Answer: All of these
Correct Answer: Cephalospodium
Correct Answer: Streptomyces erythreus
Correct Answer: Penicillin
Correct Answer: they all share the same ancestor
Correct Answer: IgM
Correct Answer: Membrane filtration
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