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MCQs

Total Questions : 195 | Page 19 of 20 pages
Question 181. Which of the following species is used for vitamin B12 production by fermentation process?
  1.    Streptomyces griseus
  2.    Streptomyces olivaceus
  3.    Bacillus megaterium
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 182. Penicillin was first produced commercially using
  1.    stationary mat culture
  2.    deep tank aerated fermentations
  3.    continuous fermentation
  4.    none of the above
 Discuss Question
Answer: Option A. -> stationary mat culture
Answer: (a).stationary mat culture
Question 183. The present day high yielding penicillin are obtained from
  1.    Penicillium chrysogenum (NRRL, 1951)
  2.    Penicillium chrysogenum (Q-176)
  3.    Penicillium chrysogenum (Q-179)
  4.    none of the above
 Discuss Question
Answer: Option B. -> Penicillium chrysogenum (Q-176)
Answer: (b).Penicillium chrysogenum (Q-176)
Question 184. The medium utilized for fungal citric acid production should be deficient in
  1.    phosphate
  2.    manganese
  3.    iron
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 185. Malt used to ferment beer is prepared by
  1.    roasting barley
  2.    washing the barley with water and drying it in air
  3.    soaking barley in water followed by germination and drying
  4.    treating barley with bovine amylase followed by roasting
 Discuss Question
Answer: Option C. -> soaking barley in water followed by germination and drying
Answer: (c).soaking barley in water followed by germination and drying
Question 186. The sulphite waste liquor fermentation employs use of Candida utilis because of its ability to ferment
  1.    sucrose
  2.    pentose
  3.    glucose
  4.    maltose
 Discuss Question
Answer: Option B. -> pentose
Answer: (b).pentose
Question 187. Which of the following organisms have shown the ability of phosphate solubilization in red wine?
  1.    S.cerevisiae
  2.    Gluconobacter oxydans
  3.    Bacillus subtilis
  4.    None of these
 Discuss Question
Answer: Option B. -> Gluconobacter oxydans
Answer: (b).Gluconobacter oxydans
Question 188. The organism commonly used for the production of β carotene is/ are
  1.    Phycomyces blakesleeanus
  2.    Cnoanephora cucurbitarum
  3.    Blakeslea trispora
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 189. Erythromycin a broad spectrum antibiotic is obtained with the help of
  1.    Streptomyces rimosus
  2.    Streptomyces venezuelae
  3.    Streptomyces erythreus
  4.    Streptomyces halstedii
 Discuss Question
Answer: Option C. -> Streptomyces erythreus
Answer: (c).Streptomyces erythreus
Question 190. The organism commercially used for fungal fermentation to obtain citric acid is
  1.    A. oryzae
  2.    A.flavus
  3.    A. niger
  4.    S. cerevisiae
 Discuss Question
Answer: Option C. -> A. niger
Answer: (c).A. niger

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