E-PolyLearning

41. Gene therapy repairs defective genes by isolating normal gene and inserting it into host's
a. veins
b. normal cells
c. liver
d. bone marrow
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Answer: (d).bone marrow

42. Inhabited part of earth in which living organisms and non-living components co-exists is called
a. Ecosystem
b. Community
c. Biosphere
d. population
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Answer: (c).Biosphere

43. All members of a clone are genetically identical until and unless there occurs a
a. transfer
b. fertilization
c. mutation
d. change
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Answer: (c).mutation

44. Branch of biology in which we study about living organisms, systems or processes in manufacturing and industrial area is called
a. Environmental Biology
b. Human Biology
c. Microbiology
d. Biotechnology
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Answer: (d).Biotechnology

45. Approximate number of species that are currently known to scientists are
a. 2,000,000
b. 2,100,000
c. 2,500,000
d. 2,300,000
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Answer: (c).2,500,000