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