science presentation microorganisms

7/29/2019 SCIENCE Presentation Microorganisms

1/11


2/11

Microorganisms are tiny living things that cannot be seen with nakedeyes.They only can be seen using microscope or a magnifying glass.They

can be found in air,water,soil,food and in the human body.Microorganisms

exist in various shapes and sizes.They need water,air,nutrients,suitableacidity and suitable temperature from to grow.


3/11

BacteriaBacteria is one of the microorganisms.Bacteria exist in various shapes and

sizes.Bacteria live in dark,warm,damp and dirty places.Bacteria reproducesif they get enough food and nutrients .Bacteria is also the third largest

microorganism.


4/11

ProtozoaProtozoa is found in lakes, ponds and rivers.Protozoa which are larger thanvirus and bacteria live in water or damp places.They reproduce by

multiplying using their cells.


5/11

FungiThe fungi is the largest microorganism.Some fungi such as mould and

yeast live un soil,garbage,food and on other living things.Some of themcan be seen using magnifying glass.Fungi reproduce by producing spores.


6/11

VirusViruses are the tiniest microorganisms.They can only be seen under a special

microscope called an electron microscope.Virus can harm humans,plants andanimals.They feed on living organisms.They are also called as the most dangerous

microorganisms.


7/11

Microorganisms Are Living

Things Microorganisms are living things because thay carry

out the following processes:

-Need to eat to stay alive

-Reproduce

-Excrete waste

-Breathe


8/11

Useful and Harmful Microorgaisms

USEFUL MICROORGANISMS

Microorganisms such as yeast are useful for making bread ,tapai andtempeh

Bacteria are very useful for making fertilisers.They break down deadplants and animals and other organic matters to form fertilisers

Fungi and bacteria also can be used to produced antibiotics

Bacteria are also used to produce alcoholic drinks

HARMFUL MICROORGANISMS Harmful microorganisms are microorganisms that have negative

effects on our health

The effects of microorganisms:

-Cause illness

-Cause food poisoning

-Cause food to turn bad

-Cause tooth decay


9/11

Microorganisms Diseases caused

Bacteria Food poisoning

Stomachache

Tooth decayConjunctivitis

Fungi Thrush

Tinea

Protozoa MalariaAmoebic Dysentry

Virus Flu

Cough

Measles

Mumps

Chicken pox

Poliomyletis


10/11

Preventing diseases from spreading 1.Some diseases caused by microorganisms can spread from one

person to another person. This is called contagious diseases

-The ways to prevent contagious diseases:

-Drinking boiled water -Covering and treating wounds

-Covering food

-Staying away from sick patients

-Do not sharing personal items such as comb and towel

-Quarantine people who have contagious diseases -Covering mouth or nose when sneezing or coughing

-Washing hands with soaps


11/11

science presentation microorganisms

Documents