MICROBES IN HUMAN WELFARE biology MCQ’s questions answers

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MICROBES IN HUMAN WELFARE

Question 96 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following pesticides is an acetyl cholinestrase inhibitor .....[CET Chd. 2011]
A
Deltamethrin
B
Permethrin
C
Malathion
D
DDT
Question 97 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Enzyme required for nitrogen fixation is .....[CBSE 2001]
A
Nitrogenase
B
Nitroreductase
C
Zymase
D
Invertase
Question 98 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which is false about antibiotics? .....[JIPMER 2000]
A
Antibiotics are capable of curing any disease
B
The term was coined by Waksman in 1942
C
Some persons develop allergy to antibiotics
D
Antibiotics are produced by micro-organisms
Question 99 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Pasteurisation is heating at .....[MPPMT 2001]
A
120$^\circ$ for 60 minutes
B
60$^circ$-63$^circ$ C for thirty minutes
C
70$^\circ$C for 60 minutes
D
80$^\circ$ for 30 minutes
Question 100 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cheeses are classified on the basis of .....[MPPMT 1997]
A
Flavour
B
Colour
C
Texture
D
All the above
There are 100 questions to complete.

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