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Class 12 Biology
Microbes In Human Welfare Chapter 10
Quiz 1
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The term antibiotic was first used by
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Pasteur
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Lister
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Waksman
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Flemming
Lactic acid bacteria (LAB) grow in milk and convert it to curd and also improve its nutritional quality by increasing
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Vitamin C and A
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Vitamin B6
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Vitamin A
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Vitamin B12
Methanogens growing anaerobically on cellulosic material produce
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Methane and hydrogen
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Methane and carbon dioxide
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Methane, carbon dioxide and hydrogen.
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Methane
Maximum number of antibiotics are got from any group except for
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Fungi
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Viruses
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Eubacteria
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Actinomycetes
Identify the fungus with medicinal importance.
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Agaricus
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Cercospora
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Saccharomyces
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Penicillium
Which one of the following microbes is used in the commercial production of ethanol?
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Streptococcus spp.
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Clostridium butyricum
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Trichoderma polysporum
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Saccharomyces cerevisiae
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
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Cyclic treatment
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Primary treatment
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Activated sludge treatment
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Tertiary treatment
Probiotics are
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Live microbial food supplement
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New kind of food allergens
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Cancer inducing microbes
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Safe antibiotics
Lactic acid is formed by the process of
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Fermentation
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Glycolysis
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HMP Pathway
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None of these
Rennin used in the cheese industry is
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Alkaloid
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Enzyme
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Antibiotic
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Inhibitor
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