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- Question
Water testing relies on the detection of certain indicator organisms known as
Options- A. acid-fast bacteria
- B. bacteroids
- C. coliforms
- D. dinoflagellates
- Correct Answer
- coliforms
- 1. The test(s) used for the assay of cholera toxin is/are
Options- A. Radioimmunoassay
- B. Enzyme-linked immunosorbent assay
- C. Morphological changes in Chinese hamster ovary cells
- D. All of the above Discuss
- 2. Which of the following species in water reveal the presence of fecal pollution of human or animal origin?
Options- A. E.coli
- B. Fecal Streptococci
- C. Clostridium perfringens
- D. All of these Discuss
- 3. The most pathogenic Brucella spp for man is
Options- A. B melitensis
- B. B abortus
- C. B suis
- D. B canis Discuss
- 4. Anaerobic bacteria undergoes butyric isopropyl fermentation in carbohydrates to yield
Options- A. glycol
- B. butyric acid
- C. acetic acid
- D. all of these Discuss
- 5. In Corynebacterium glutamicum, tryptophan biosynthesis is regulated by the activity of
Options- A. DAHP synthetase
- B. Anthranilate synthase
- C. Both (a) and (b)
- D. Phosphoenol pyruvate Discuss
- 6. The precursor used for production of vitamin B12 by Streptomyces olivaceus is
Options- A. cobalt chloride
- B. cobalt sulphate
- C. calcium chloride
- D. calcium sulphate Discuss
- 7. Invertase has its application in confectionaries to prevent crystallization of sugar. It is obtained from
Options- A. A. oryzae
- B. A. niger
- C. S. cerevisae
- D. B. subtilis Discuss
- 8. The micro-organism used for industrial production of lactic acid using corn dextrose as media is
Options- A. Lactobacillus bulgaricus
- B. Lactobacillus delbrueckii
- C. Lactobacillus pentosus
- D. Streptococcus lactis Discuss
- 9. The organism commonly used for the production of ? carotene is/ are
Options- A. Phycomyces blakesleeanus
- B. Cnoanephora cucurbitarum
- C. Blakeslea trispora
- D. all of these Discuss
- 10. Which of the following cephalosporin is more active than penicillin against various species of Salmonella?
Options- A. Cephalosporin N
- B. Cephalosporin C
- C. Synnematin
- D. Both (a) and (c) Discuss
More questions
Correct Answer: All of the above
Correct Answer: All of these
Correct Answer: B melitensis
Correct Answer: all of these
Correct Answer: Both (a) and (b)
Correct Answer: cobalt chloride
Correct Answer: S. cerevisae
Correct Answer: Lactobacillus delbrueckii
Correct Answer: all of these
Correct Answer: Both (a) and (c)
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