Theme : Investigating Living Things

Unit 1 : Microorganisms

Definition:

Microorganisms is an organisms that can only

seen through a microscope.

Virus Protozoa

bacteria fungi

Microorganisms are living things.

They undergo life process such as breathe ,

grow and move.

Yeast is a fungus. It used in making bread.

It is able rise after we mix it with flour and

water and let the flour rest a while.

We can see the size of dough getting bigger.

The effect of yeast on the dough shows that

yeast breathes.

Flour +

water

+yeast

Dough rises

(yeast

breathe)

When water is sprinkled on a slice of bread

and kept in a plastic bag for a week.

We can see black spot on the bread.

The black spot are fungi

This activity show that microorganisms

grows.

Fungus

Microorganisms moves.

We can see the movement of microorganisms

through a microscope.

Amoeba move to top

Making bread

Making tapai

Making tempe

Making fertilizer

Illness

Food poisoning

Food turns bad

Tooth decay

a. Stomach upset

f. conjunctivitis

b. Tooth decay

g. scabies

c. measels

h. AIDS

d. flu

i. mumps

e. cough

Diseases caused by

microorganisms :

Diseases caused by microorganisms

can spread from one person to

another.

Example of diseases that can

spread:

cough, flu, measles, chicken pox

1. Through food and drink

2. Sneezing or coughing

3. Direct contact

4. Carried by mosquitoes or flies

5. Spread through the air

a. Washing hands before handling food

b. Covering the mouth and nose when

coughing or sneezing

c. Washing hands after using the toilets

d. By putting patients who have chicken

pox, conjunctivities or mump in

quarantine.

e. By covering wounds

By :

LEE CHOUI YEE

UPSI ELA12

(A121PJJ)