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2.3 Avoiding microbes

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Where might you find most microbes?

2.3 How clean is it?

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Sneezes are an obvious source of microbes but where else can you pick them up?

Picking up microbes

2.3 Avoiding microbes

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Whenever new homes are built, pipes like this are used to connect them to sewers.

Sewers take human wastes away so diseases have less chance to spread.

Removing microbes

2.3 Avoiding microbes

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Microbes reproduce fast when they have a good source of food…

…and what’s food for us is food for them too.

Growing your own

2.3 Avoiding microbes

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Many foods are stamped with dates to show when they should be eaten by.

Often that’s just before the microbes in them have made the food smell rotten.

Use by dates

2.3 Avoiding microbes

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Find out which sorts of food have the closest use-by dates.

Out of date?

2.3 Avoiding microbes

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It’s hard to avoid colds, or know who passed you the virus.

The microbes that cause STI’s (sexually transmitted infections) only survive for a few seconds outside the body…

…so it’s easier to protect yourself.

2.3 Staying safe

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During sex, body fluids mix.

Condoms stop body fluids mixing during sex.

STI transmission

2.3 Staying safe

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2.3 Match up

Match the hazardous microbe to a method that will stop it spreading.

1. Chlamydia

2. Salmonella

3. Cold virus

4. E. coli from faeces

Good sewers

Wash hands often

Use a condom

Cook food well, don’t keep it warm

Show answers

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2.3 Match up

Match the hazardous microbe to a method that will stop it spreading.

1. Chlamydia

2. Salmonella

3. Cold virus

4. E. coli from faeces

Good sewers

Wash hands often

Use a condom

Cook food well, don’t keep it warm

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Questions to answer

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Questions to answer

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Q10. List four sources of microbes.

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Q11. Why is it good to keep sewers in a good state of repair?

Sewers take human wastes away so diseases have less chance to spread.

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Q12. Use by dates on food are only a rough guide. Explain why.

Many foods are stamped with dates to show when they should be eaten by.

Often that’s just before the microbes in them have made the food smell rotten.

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2.3 Match up

1. Chlamydia

2. Salmonella

3. Cold virus

4. E. coli from faeces

Good sewers

Wash hands often

Use a condom

Cook food well, don’t keep it warm

Show answers

Q13.

Match the hazardous microbe to a method that will stop it spreading.

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Q14. Describe four ways of cutting the number of infections you get

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