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1. The term antibiotic was first used by
A. Pasteur
B. Lister
C. Waksman
D. Flemming
2. Lactic acid bacteria (LAB) grow in milk and convert it to curd and also improve its nutritional quality by increasing
A. Vitamin C and A
B. Vitamin B6
C. Vitamin A
D. Vitamin B12
3. Methanogens growing anaerobically on cellulosic material produce
A. Methane and hydrogen
B. Methane and carbon dioxide
C. Methane, carbon dioxide and hydrogen.
D. Methane
4. Maximum number of antibiotics are got from any group except for
A. Fungi
B. Viruses
C. Eubacteria
D. Actinomycetes
5. Identify the fungus with medicinal importance.
A. Agaricus
B. Cercospora
C. Saccharomyces
D. Penicillium
6. Which one of the following microbes is used in the commercial production of ethanol?
A. Streptococcus spp.
B. Clostridium butyricum
C. Trichoderma polysporum
D. Saccharomyces cerevisiae
7. A sewage treatment process in which a part of the decomposer bacteria present in the wastes are recycled into the starting of the process is called
A. Cyclic treatment
B. Primary treatment
C. Activated sludge treatment
D. Tertiary treatment
8. Probiotics are
A. Live microbial food supplement
B. New kind of food allergens
C. Cancer inducing microbes
D. Safe antibiotics
9. Lactic acid is formed by the process of
A. Fermentation
B. Glycolysis
C. HMP Pathway
D. None of these
10. Rennin used in the cheese industry is
A. Alkaloid
B. Enzyme
C. Antibiotic
D. Inhibitor
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