Leprosy is also called as from Biology Microbes in Human Welfare

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71.

Leprosy is also called as

  • Hansen's disease

  • sarcoma

  • slim disease

  • leukamia


A.

Hansen's disease

Leprosy is also called as Hansen's disease. It is a chronic infectious disease caused by Mycobacterium leprae. The disease mainly affects the skin, the peripheral nerves, mucosal surfaces of the upper respiratory tract and the eyes. It is known to occur at all ages ranging from early infancy to very old age.


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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


73.

Yeast is used in the production of :

  • acetic acid

  • citric acid

  • ethyl alcohol

  • curd


74.

Streptomycin was isolated first time by :

  • A. Flemming

  • Robert Koch

  • N. Borlaug

  • S. Waksman


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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


76.

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

  • C6H12O6

  • C2H5OH

  • (C6H10O5)n

  • CH2OH


77.

The pesticide used as preventive measure in buildings is :

  • aldrin

  • dieldrin

  • endrin

  • DDT


78.

Cheese and yogurt are the products of

  • dehydration

  • fermentation

  • pasteurization

  • distillation


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79.

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

  • rennin

  • erypsine

  • trypsin

  • chymotrypsin


80.

Which of the following pesticides is an acetylcholinesterase inhibitor?

  • Aldrin

  • BHC

  • Endosulfan

  • Malathion


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