Biology Multiple Choice Questions and Answers for Different Competitive Exams

MCQ on Industrial Microbiology

1. Which one of the following is called as the ‘brewers yeast’
a) Saccharomyces ludwigi
b) Saccharomyces cerevisiae
c) Saccharomyces boulardii
d) Saccharomyces pastorianus
2. Butanol is obtained by fermenting molasses by
a) Clostridium butyricum and Clostridium acetobutylicum
b) Clostridium butyricum and Clostridium tetanai
c) Clostridium butyricum and lactobacillus
d) Clostridium butyricum and Clostridium oceanicum
3. Which of the following is the source of Vitamin A
a) Sterptococcus
b) Rhodotorula gracilis
c) both a and b
d) Yeast
4. Yeast cells are good source of
a) Vitamin A and B
b) Vitamin A and D
c) Vitamin B and D
d) all of these
5. Roquefort cheese is ripened by
Roquefort cheese
 Roquefort cheese
a) Penicillium roqueforti
b) Penicillium camemberti
c) all Penicillium sp
d) Penicillium rhizogenes
6. Penicillium camemberti is used for ripening of
a) roqueforti cheese
b) Camembert cheese
c) all cheese
d) fruits
7. Unicelled microbes grown as source of proteins are called
a) microbial proteins
b) single cell proteins
c) unicelled proteins
d) none of these
8. Which of the following are rich source of protein
a) Spirulina and Chlorella
b) Chlorella and Scendesmus
c) Scenedesmus
d) all of the above
9. Zymase is obtained from
a) Saccharomyces ludwigi
b) Saccharomyces cerevisiae
c) Saccharomyces ludwigi
d) Saccharomyces boulardii
10. Pectinase is obtained from
a) Saccharomyces cerevisiae
b) Aspergillus sp
c) Spirulina
d) Penicillium sp
11. Glucose oxidase is obtained from
a) Saccharomyces cerevisiae
b) Aspergillus niger
c) Spirulina
d) Penicillium sp
12. Bacillus thuringiensis is used as
a) insecticide
b) fungicide
c) microbicidal agent
d) rodenticide
13. Petroleum degrading species include
a) Nocardia
b) Micrococcus
c) Penicillium
d) all of the above
14. Kojic acid is obtained from
a) Nocardia
b) Micrococcus
c) Penicillium
d) Aspergillus
15. Fumaric acid is obtained from
a) Saccharomyces cerevisiae
b) Aspergillus niger
c) Rhizopus stolonifer
d) Penicillium sp
Answers:
1. b)Saccharomyces cerevisiae
2. a) Clostridium butyricum and Clostridium acetobutylicum
3. b) Rhodotorula gracilis
4. c) Vitamin B and D
5. a) Penicillium roqueforti
6. b) Camembert cheese
7. b) single cell proteins
8. d) all of the above
9. b) Saccharomyces cerevisiae
10. d) Penicillium sp
11. b) Aspergillus niger
12. a) insecticide
13. d) all of the above
14. d) Aspergillus
15. c) Rhizopus stolonifer

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