A. Virus C. Bacteria
B. Yeast D. Worm
2. Which of the following are diseases caused by microorganisms?
I. Measles III. Influenza
II. Mumps IV. Cough
A. I and IV only C. II, III and IV only
B. II and III only D. I, II, III and IV
3. Brushing our teeth regularly helps prevent tooth decay because it....
A. makes our teeth look white.
B. makes our teeth stronger.
C. removes food that microorganisms feed on.
D. removes all the microorganisms from our mouth.
4. A person is suffering from chicken pox. Which of the following is the best way of preventing the disease from spreading?
A. Drink water which has been boiled.
B. Put the sick person into quarantine.
C. Wash hands wish soap.
D. Cover the chicken-pox with cloth.
5. The picture below shows the area covered by fungi growing on four slices of bread. Each slide of bread is put in different conditions as shown.
(P) Dry bread (Q) Water on bread
(R) Lemon juice on bread (S) Sugar solution on bread
(a) Which bread has the largest area covered with fungi growing on it?
(b) What can you infer?
(c) In the experiment, identify what is:
i. kept the same?
ii. changed?
iii. measured?
Teacher, can you share the answer?
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