Year 9 Infectious Diseases – Types of Microorganisms Homework.

Name: ……………………………………………… Class : ……Part ALearning Area: Microorganisms and Their Effects on Living ThingsLearning Objective: Understanding the classification of microorganisms.

1. Based on their characteristics, microorganisms can be classified into five groups. Complete the diagram below.

2. Diagram below shows microorganisms.

A B C D E

Identify the group of microorganisms A, B, C , D and E

A: ………………….. B: ………………….. C: …………………………

D: …………………… E: …………………..

3. Complete the table below;

Characteristic Group of microorganisms

(a) Exist in different shapes and are generally named according to their shapes.

(b) Cannot reproduce outside living cell.

(c) Can be crystallized.

(d) They are able to make their own food by photosynthesis.

(e) Most reproduce asexually by formation of spores or sexually by conjugation.

(f) They are unicellular animals and have the structure of general animal cells.

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FIVE GROUPS OF MICROORGANISMS

Name: …………………………………………….. Class : ……Part B: Learning Area: Microorganisms and Their Effects on Living ThingsLearning Objective: Applying knowledge about useful microorganisms.

1. The statements below show the uses and roles of beneficial microorganisms in daily life

A Yeast acts on carbohydrate to produce carbon dioxide that cause breads and cakes to rise.

B Dead organisms such as plants and animals undergo a process called decomposition caused by bacteria and fungi

C Penicillin, which is produced from a certain type of fungus helps us to produce antibiotics.

D Microorganisms such as bacteria and virus play an important role in the preparation of vaccines.

E Certain algae produce beta carotene to prevent cancerF Bacteria living in herbivores digestive system secrete an enzyme called cellulose which

helps to digest cellulose.G Nitrogen fixing bacteria helps to bind nitrogen from the atmosphere and convert it to

nitrate in the soil.H Yeast acts on glucose solution to produce alcohol.I Bacteria is used to oxidize alcohol in making of vinegar J Microorganisms are also used in biological control

Group the above statements into five categories

Category Statement (a) Food digestion

(i)………………………………………………………………….(b) Decaying process

(i)………………………………………………………………….

(c) Medicine

(i) ………………………………………………………………..

(ii) ………………………………………………………………..

(iii) ……………………………………………………………….

(d) Agriculture (i) ………………………………………………………………..

(ii) ………………………………………………………………..

(e) Industry

(i) ………………………………………………………………..

(ii) ………………………………………………………………..

(iii) ……………………………………………………………….

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Name: ………………………………………………… Class : ……Part C:Learning Area: Microorganisms and Their Effects on Living ThingsLearning Objective: Analysing the harmful effects of microorganisms.

1. Identify the diseases caused by microorganisms from the cross word puzzle below.

M O T I N E A S H C E N D O L

C E C A T I D M C H O L E R A

P T A A I H U A R T U N N O T

O I N S I A B E T E S E G N R

L B M A L A R I A L A M U A O

I E R L J E C A N C E R E L S

O A E R I C S G K R M P F D A

M S V R S T G W O L M K E I I

Y A M R I N G W O R M I V N D

E T K M L D A K P O A J E H S

L G A A T R I C A H R E R O R

I B M U M P S Y U R I M R N O

T D Y S B N T S Y P H I L I S

I H D Y S E N T E R Y J I O I

S L A H E P A T I T I S B S T

Diseases caused by ;

i) Viruses : ……………………………………………………………… (6 diseases)

……………………………………………………………………………………………

ii) Bacteria : ………………………………………………………………… (2 diseases)

iii) Fungi :……………………………………………………………………. (2 diseases)

iv) Protozoa: ………………………………………………………………… (2 diseases)

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