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    CBSE

    Subject

    Biology
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    NEET Biology : Microbes in Human Welfare

    Multiple Choice Questions

    71.

    Curdling of milk in small intestine occurs due to the action of

    • rennin

    • erypsine

    • trypsin

    • chymotrypsin

    Answer
    • 72.

    A simple technology has been developed in India for plant breeders and farmers to use two plants as biofertilizers for growing rice. These are

    • Azotobacter and Rhizobium

    • Chlorella and Spirulina

    • Azolla and nitrogen fixing blue-green algae

    • Riccia and Marchantia

    Answer
    • 73.

    Which of the following is the product of glucose fermentation by yeast?

    • C6H12O6

    • C2H5OH

    • (C6H10O5)n

    • CH2OH

    Answer
    • 74.

    Streptomycin was isolated first time by :

    • A. Flemming

    • Robert Koch

    • N. Borlaug

    • S. Waksman

    Answer
    • 75.

    Which of the following micro-organism is used for conversion of milk into curd?

    • Xanthomonas citri

    • Bacillus megatherium

    • Acetobacter aceti

    • None of the above

    Answer
    • 76.

    Leprosy is also called as

    • Hansen's disease

    • sarcoma

    • slim disease

    • leukamia

    Answer
    • 77.

    Which of the following pesticides is an acetylcholinesterase inhibitor?

    • Aldrin

    • BHC

    • Endosulfan

    • Malathion

    Answer
    • 78.

    Cheese and yogurt are the products of

    • dehydration

    • fermentation

    • pasteurization

    • distillation

    Answer
    • 79.

    The pesticide used as preventive measure in buildings is :

    • aldrin

    • dieldrin

    • endrin

    • DDT

    Answer
    • 80.

    Yeast is used in the production of :

    • acetic acid

    • citric acid

    • ethyl alcohol

    • curd

    Answer
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