2. Microorganisms: Friend and Foe

2. Microorganisms: Friend and Foe

19 Maths Exercise Solutions

How do you prevent the spread of communicable diseases?
Question No.1
How do you prevent the spread of communicable diseases?
Short answer question:
Why does the milk that comes in packets not spoil? What is pasteurisation?
Question No.2
Short answer question:
Why does the milk that comes in packets not spoil? What is pasteurisation?
Fill in the blank:
Microorganisms can be seen with the help of a ___.
Question No.3
Fill in the blank:
Microorganisms can be seen with the help of a ___.
Fill in the blank:
Blue green algae fix ___ directly from air and enhance fertility of soil.
Question No.4
Fill in the blank:
Blue green algae fix ___ directly from air and enhance fertility of soil.
Fill in the blank:
Alcohol is produced with the help of ___.
Question No.5
Fill in the blank:
Alcohol is produced with the help of ___.
Fill in the blank:
Cholera is caused by ___.
Question No.6
Fill in the blank:
Cholera is caused by ___.
Yeast is used in the production of（ ）
A. sugar
B. alcohol
C. hydrochloric acid
D. oxygen
Question No.7
Yeast is used in the production of（ ）
A. sugar
B. alcohol
C. hydrochloric acid
D. oxygen
The following is an antibiotic（ ）
A. Sodium bicarbonate
B. Streptomycin
C. Alcohol
D. Yeast
Question No.8
The following is an antibiotic（ ）
A. Sodium bicarbonate
B. Streptomycin
C. Alcohol
D. Yeast
Carrier of malaria-causing protozoan is（ ）
A. female mosquito
B. cockroach
C. housefly
D. butterfly
Question No.9
Carrier of malaria-causing protozoan is（ ）
A. female mosquito
B. cockroach
C. housefly
D. butterfly
The most common carrier of communicable diseases is（ ）
A. ant
B. housefly
C. dragonfly
D. spider
Question No.10
The most common carrier of communicable diseases is（ ）
A. ant
B. housefly
C. dragonfly
D. spider