E-PolyLearning

241. Viruses can be destroyed by antibodies produced by our
a. Red blood cells
b. White blood cells
c. Platelets
d. Muscle cells
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Answer: (b).White blood cells

242. Electron microscope can magnify the objects up to
a. 230000 times
b. 250000 times
c. 260000 times
d. 150000 times
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Answer: (b).250000 times

243. The cell wall of fungi is composed of
a. Fiber
b. Lignin
c. Chitin
d. Wax
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Answer: (c).Chitin

244. Viruses act as biological carriers or
a. Detectors
b. Vectors
c. Defectors
d. Acceptors
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Answer: (b).Vectors

245. Bacteriophages are used to kill bacteria in _____________ hospitals
a. Indian
b. Russian
c. Japanese
d. Pakistani
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Answer: (b).Russian