1. ACTIVITY 1 : MICROORGANISM
EXERCISE 1 . UNDERLINE THE CORRECT ANSWER.
1. Microorganisms are (living things / non-living things)
2. “ Micro” means ( tiny / large)
3. Organism means ( living things/ non-living things)
4. Microorganism can be found only by (telescope/microscope)
5 They exist in different shapes, sizes and colour. They can be found in air , soil,
and water and in or on the plants and animals. They are ( protozoa / bacteria)
6. They eat from live organisms. They are the smallest of all microorganisms. They
are ( yeast/ viruses )
7. They can be found in lake, ponds (kolam), rivers and lakes (tasik). They geat
food from other microorganisms. They are ( Yeast/ Protozoa)
8. They can be found on mouldy bread and rotten food. They are ( Protozoa/
Fungi)
9. All microorganisms breathe. During breathing, (carbon dioxide /oxygen )is
taken in and (carbon dioxide /oxygen) is given out.
10. The similarity between bacteria and fungi is both are ( non-living things/
microorganisms)
ACTIVITY 2. WRITE ‘TRUE’ OR ‘FALSE’ IN THE BOXES PROVIDED.
1. Worms, bacteria and ants are three types of microorganisms .
2. We can see microorganisms with the naked eye.
3. Like humans, microorganisms breathe, grow and move
4. A magnifying glass can be used to see some of the microorganisms.
5. The name of bacterias are according to their shapes.
6. The smallest among all microorganisms is protozoa.
7. All microorganisms are harmful.
1

2. ACTIVITY 3
TOPIC : MICROORGANISM UNDERGO LIFE PROCESSES
EXERCISE 3 . Fill in the blanks with correct answers.Some answers may
be used twice.
Microorganisms are a) ________________. They come in different (b)
___________________ and (c) ________________. We cannot see microorganism
through our naked eyes because microorganisms are too (d)_____________ in
size. However, they can be seen by using a (f) _____________________.
There are five groups of microorganisms, namely (g)
__________________, (h)_____________________, (i)_____________________,
(j) ___________________________ and (k)______________________. Like other
living things, microorganisms can (l) __________________________, (m)
______________________________ and (n) ______________________________
2

3. ACTIVITY 4
Name the type of microorganisms
CCTS : classfying
Date : ___________________________
A . B. C.
C . D. E.
F. G. H
I.
TYPES OF MICROORGANISMS :
FUNGI, VIRUSES, BACTERIA,
PROTOZOA, ALGAE
__________________________
3

4. TOPIC : MICROORGANISMS ARE HARMFUL AND USEFUL.
MICROORGANISMS ARE USEFUL.
DATE : ________________________
1. Complete the following statements.
2.
Fill in the blanks with correct answers.
Lactobacillus harmful yeast
breathes oxygen carbon dioxide
fungus humus
Some microorganisms are useful and some are a)
_______________to us. b)______________________ is an example of
microorganism that is widely used in the food industry. Yeast is a fungus. It is used
in the making of bread, cheese, tempeh and tapai .When yeast is added to a sugar
solution, it uses the sugar as a source of food. When it c) ___________________,
it takes in d)__________________________ and releases
e)_______________________________that can be seen in the mycelium of the
fungus when it grows. Carbon dioxide makes the bread dough rise.
4

5. Some bacteria, for example f) ________________________ is widely used
in making yogurt drink. Antibiotics such as penicillin are extracted from penicillium,
which is a g) ____________________
Bacteria and fungi in soil which act on grass and leaves or any other organic
materials and convert them to h) ___________________________________ by a
process known as biodegradation.
ACTIVITY 3 : FILL IN THE TABLE WITH THE CORRECT ANSWERS.
B. MICROORGANISMS CAN CAUSED FOOD POISONING THROUGH
SPOILED FOOD
Microorganisms can cause food to turn bad:
Fill in the table with the corrects answers.
TYPES OF FOOD SIGNS OF FOOD THAT HAVE
TURNED BAD
Milk
Vegetables
Fish
Rice
5

6. EXERCISE 1
TOPIC : MICROORGANISMS ARE HARMFUL AND USEFUL.
MICROORGANISMS ARE USEFUL.
DATE : ________________________
1. State four harmful actions of bacteria.
a) ____________________________________________________________
___________________________________________________________
b)___________________________________________________________
____________________________________________________________
c)___________________________________________________________
___________________________________________________________
d) __________________________________________________________
__________________________________________________________
Exercise 2. Match correctly
6

7. Exercise 3
State a way to prevent each disease from spreading
Name of disease Way to prevent it from spreading
a)Cough
b) chickenpox
b) upset stomach /
diarrhea
c) flu
2. Write “true” for the correct statements and ‘false’ for the wrong
statements.
a) All microorganism are harmful. They cause food too turn bad and make us ill.
b) Cake, buns and milk are produced by using microorganisms.
c) Microorganisms can be carried from place to place and spread
from one person to another
d) Patients who have AIDS should be quarantined to prevent the
disease from spreading to another person.
e) Flu can be spread by air
f) We boil water before drinking to kill the living microorganisms
in water
7