Micro Organisms
About bacteria its been known that
some are useful
some are harmful
both a and b
none are useful
both a and b
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Chicken pox is caused byA. virus
B. bacteria
C. contaminated water
D. food poisoning
Important decomposers which breakdown dead waste and take nutrients from them are
A. bacteria
B. fungi
C. both a and b
D. virus
Different types of cheese are prepared by different kinds of
A. virus
B. bacteria
C. fungi
D. moulds
Microorganisms are
A. tiny
B. big
C. medium
D. larger
E.coli can reproduce and become double in
A. 20 mins
B. 60 mins
C. one hour
D. 2 mins
Viruses cannot be observed under ordinary microscope they are smaller than
A. bacteria
B. amoeba
C. paramecium
D. fungi
Pasteurization helps us to kill
A. micro-organisms
B. fungi
C. virus
D. bacteria
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