Microbes in Human Welfare Questions: MCQs (Multiple Choice Questions) in Quiz Format on ‘Microbes in Human Welfare’. Quiz No. 3
Microbes in Human Welfare: MCQs Quiz - 3
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A nitrogen fixing microbe associated with Azolla in rice fields is
Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?
A patient brought to a hospital with myocardial infarction is normally immediately given
The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorized as
Monascus purpureus is a yeast used commercially in the production of
Blood cholesterol lowering statins
Streptokinase for removing clots from the blood vessels
Two microbes found to be very useful in genetic engineering are
Diplococcus sp. and Pseudomonas sp.
Vibrio cholerae and a tailed bacteriophage
Escherichia coli and Agrobacterium tumefaciens
Crown gall bacterium and Caenorhabditis elegans
Which one of the following plant is commonly used as green manure?
A natural insecticide
An insect hormone
A natural herbicide
The biological control of agricultural pests, unlike chemical control is
Azolla is used as a biofertilizer because it
Has association of nitrogen fixing Cyanobacteria
Has association of nitrogen fixing Rhizobium
Multiplies very fast to produce massive biomass
Has association of mycorrhiza
Green manure plants used by farmer mainly belong to
Yeast is used in the production of
Bread and beer
Cheese and butter
Citric acid and lactic acid
Lipase and pectinase
Which of the following microbes is used for commercial production of ethanol?
A sewage treatment process in which a part of decomposer bacteria present in the wastes is recycled into the starting of the process is called
Activated sludge treatment
Crop rotation is used by farmers to increase
Organic content of soil
Nitrogenous content of soil
All of these
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