Microbes and diseaseTrue or false?

Statements T or F

1. Bacteria, viruses and some fungi are micro-organisms.

2. Yeast is a type of fungus.

3. Bacteria are smaller than viruses.

4. There are bacteria in yoghurt.

5. Fungi never cause disease.

6. AIDS is a disease caused by a virus.

7. Viruses need other living cells to reproduce.

8. Ringworm is a disease caused by a worm.

9. Antibiotics such as penicillin are made by viruses.

10.

When microbes respire they produce oxygen gas.

Microbes

• What are they?• What are the main types?• Can they be useful?• Can they cause problems?• Where do they get their energy?

509m

x300 450m tallTaipei 101Taiwan

X 1000

1.5km tall

X 10000

15.0km tall

X 100000

150.0km tall

0.1mm

Yeast cellsOur scale

10.0m

Bacteria

0.001m

m

Our scale

10.0cm

A virus

0.0001mm

Our scale

10.0mm

Aerobic respiration

food (glucose)oxygen

carbon dioxide

water

energy

+

+

+

Dough = flour + water + yeast + sugar + salt

Questions for your group1. What is the gas which makes the dough rise?2. What process produces this gas?3. Why is the dough kept somewhere warm to rise?4. How might the amount of sugar affect how high

the dough rises?5. Yeast is alive. What happens to it when the bread

is baked at 200oC?

Making Bread

bakingproving

dough kept in warm place

at 200oC

True or false?Statements

1. Bacteria, viruses and some fungi are micro-organisms.

2. Yeast is a type of fungus.

3. Bacteria are smaller than viruses.

4. There are bacteria in yoghurt.

5. Fungi never cause disease.

6. AIDS is a disease caused by a virus.

7. Viruses need other living cells to reproduce.

8. Ringworm is a disease caused by a worm.

9. Antibiotics such as penicillin are made by viruses.

10.

When microbes respire they produce oxygen gas.

T or F

TRUE

TRUE

FALSE

TRUE

FALSE

TRUE

TRUE

FALSE

FALSE

FALSE

X 1000 X 10,000