8C Booklet

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Unit 8C

Microbes and Disease

Name: ……………………………..

Year 8: …………


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Unit 8C: Microbes and Disease_______________________________________________________________________________________

Q1: Single-celled organisms


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Q2: Growing micro-organisms in a laboratory

These pictures show how to grow bacteria on agar.

Put them in the correct order.


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Q3: Comparing toilet cleaners


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Q4: Making yoghurt


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Q5: Micro-organisms and disease


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Q6: How to stop an epidemic


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Q7: How Jesse Lazear’s death from yellow fever helped to build the Panama Canal

Put the following fact cards into the correct sequence.


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Q8: Outbreak!


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Q9: Body invaders


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Q10: Protecting ourselves against disease

Complete this table.

Part of your body How it protects you against disease

Saliva contains an enzyme that can kill micro-organisms.

Hairs in your nostrils trap micro-organisms, and mucus contains an enzyme that can

kill micro-organisms.

Most micro-organisms are killed by acid.

Micro-organisms can’t get through the tight layers of cells.

Tears contain an enzyme that can kill micro-organisms.

2- your body makes enzymes that can kill micro-organisms.Name three parts of your body that use enzyme to protect you against disease.

__________________________ __________________________ __________________________

Q11: What happens when you get a cold?

The sentences below describe how white blood cells protect you against disease.Put them in the correct order.


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Q12: The body police

P.S:There are two other types of antibodies, which work in different ways:

Antibodies stick to the micro-organism so it can’t get into cells and cause disease.

Antibodies join micro-organisms together into a clump, which white blood cells engulf and destroy.


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Q13: Which antibiotic?


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Q14:

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