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MCQs

Total Questions : 116 | Page 3 of 12 pages
Question 21. Which of the following Ascomycetes are used for riboflavin production?
  1.    Candida guilliermondia
  2.    Both (a) and (b)
  3.    Eremnothecium ashbyii
  4.    Ashbya gossypii
 Discuss Question
Answer: Option B. -> Both (a) and (b)
Question 22. B. flavum strain can be used for the production of
  1.    L-Proline
  2.    All of these
  3.    L-Threonine
  4.    L-Isoleucine and L-Histidine
 Discuss Question
Answer: Option B. -> All of these
Question 23. Which of the following are true for the heterofermentative microorganism producing lactic acid?
  1.    They are used for commercial lactic acid production
  2.    None of these
  3.    Some lactic acid with carbon dioxide, ethyl alcohol, acetic acid and trace amount of few other products
  4.    Only trace amounts of end products other than lactic acid
 Discuss Question
Answer: Option C. -> Some lactic acid with carbon dioxide, ethyl alcohol, acetic acid and trace amount of few other products
Question 24. During fermentation, pyruvic acid is converted into organic products such as
  1.    glucose and fructose
  2.    citric acid and isocitric acid
  3.    starch and cellulose
  4.    ethyl alcohol and lactic acid
 Discuss Question
Answer: Option D. -> ethyl alcohol and lactic acid
Question 25. A major organism used in commercial bioleaching for copper recovery is
  1.    Desulfovibrio desulfuricans
  2.    Thiobacillus ferrooxidans
  3.    Aspergillus niger
  4.    Pseudomonas aeruginosa
 Discuss Question
Answer: Option B. -> Thiobacillus ferrooxidans
Question 26. The submerged fermentation of vinegar utilizes special fermentor designs known as
  1.    both (a) and (b)
  2.    cavitator
  3.    acetator
  4.    packed vinegar generator
 Discuss Question
Answer: Option A. -> both (a) and (b)
Question 27. The major organism used in the microbial production of citric acid is
  1.    Penicillin notatum
  2.    Lactobacillis delbrueckii
  3.    Rhizopus nigrificins
  4.    Aspergillus niger
 Discuss Question
Answer: Option D. -> Aspergillus niger
Question 28. Which of the following is a heterofermentative micro-organism?
  1.    Lactobacillus delbrueckii
  2.    Lactobacillus bulgaricus
  3.    Leuconostoc mesenteroides
  4.    Lactobacillus pentose
 Discuss Question
Answer: Option A. -> Lactobacillus delbrueckii
Question 29. The aerated submerged bacterial fermentation to produce vitamin B12 employs strains of
  1.    Propionibacterium
  2.    both (a) and (b)
  3.    Acetobacter
  4.    Pseudomonas
 Discuss Question
Answer: Option B. -> both (a) and (b)
Question 30. Which of the following organism is utilized for the production of D-L-alanine?
  1.    C. glutamicum
  2.    Arthrobacter paraffineus
  3.    Brevibacterium flavum
  4.    Microbacterium ammoniaphilum
 Discuss Question
Answer: Option D. -> Microbacterium ammoniaphilum

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