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Science > Living Things > Microorganisms - Quiz

Microorganisms

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1. Most microorganisms cannot be seen without a ...

Telescope

Periscope

Microscope

2. Which of these is NOT true about microorganisms?

They are all harmful

They feed and grow

They reproduce

3. What is yeast used for?

To cure chickenpox

To make bread rise

To make yoghurt

4. Why should cooked and uncooked foods be stored separately?

Because bacteria only like cooked food

Because bacteria only like uncooked food

To stop bacteria spreading from one to the other

5. Which of these is NOT caused by a microorganism?

Measles

A sprained ankle

Tooth decay

6. Which of these microorganisms is useful?

Bacteria that decompose leaves

Salmonella

Chickenpox virus

7. Which of these microorganisms is harmful?

Yeast

Bacteria in yoghurt

Fruit mould

8. Bacteria and viruses are both types of microorganisms. Which is smaller?

Bacteria

Viruses

They are both the same size

9. Cleaning your teeth regularly helps prevent tooth decay because ...

Microorganisms don't like the taste of toothpaste

Brushing removes sugar that microorganisms like to eat

Brushing removes all microorganisms from your mouth

10. Which of these is true?

Microorganisms are all around us

Microorganisms are only found in the kitchen

All microorganisms cause illness

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