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- Question
Polyene antibiotics are
Options- A. large ring structures
- B. ?-lactam - thiazolidine ring
- C. small ring structures
- D. any of these
- Correct Answer
- large ring structures
- 1. The first penicillin isolated by Alexander Fleming, penicillin F is also called
Options- A. 2-Pentenyl Penicillin
- B. n-heptyl penicillin
- C. phenoxymethyl penicillin
- D. benzyl penicillin Discuss
- 2. Frame shift mutation may occur as a result of
Options- A. formation of a thymine-dimer
- B. deamination of cytosine to uracil
- C. conversion of guanine to xanthine
- D. none of the above Discuss
- 3. The species of Acetobacter which produces cellulosic strands to hold the cells in lime layer is
Options- A. Acetobacter curvum
- B. Accetobacter orleanense
- C. Acetobacter xylinum
- D. Acetobacter schuetzenbachii Discuss
- 4. Which of the following is/are synthesized from late mRNA?
Options- A. Phage structural proteins
- B. Proteins that help with phage assembly without becoming part of the virion structure
- C. Proteins involved in cell lysis and phage release
- D. All of the above Discuss
- 5. The potential spoilage organism in beer is
Options- A. Saccharomyces diastaticus
- B. S. carlsbergensis
- C. S. cerevisiae
- D. S. lactis Discuss
- 6. Which of the following virus is enveloped?
Options- A. Adeno
- B. Herpes
- C. Polio
- D. None of these Discuss
- 7. Periplasm is
Options- A. the area between the inner and outer membranes of gram-negative bacteria
- B. the area between the inner and outer membranes of Gram-positive bacteria
- C. the interior portion of mitochondria
- D. the area outside the cell membrane that is influenced by the polymers Discuss
- 8. The generation time of a culture that produces two generations per hour is
Options- A. greater than that produces three generations per hour
- B. lesser than that produces three generations per hour
- C. equal to that produces three generations per hour
- D. none of the above Discuss
- 9. The current genus name of a saccharolytic group of Bacteroides is
Options- A. Porphyromonas
- B. Bacteroides
- C. Prevotella
- D. None of these Discuss
- 10. Polyene antibiotics are
Options- A. large ring structures
- B. ?-lactam - thiazolidine ring
- C. small ring structures
- D. any of these Discuss
More questions
Correct Answer: 2-Pentenyl Penicillin
Correct Answer: none of the above
Correct Answer: Acetobacter xylinum
Correct Answer: All of the above
Correct Answer: Saccharomyces diastaticus
Correct Answer: Herpes
Correct Answer: the area between the inner and outer membranes of gram-negative bacteria
Correct Answer: greater than that produces three generations per hour
Correct Answer: Porphyromonas
Correct Answer: large ring structures
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