Transcript U12.1P1 8PT

Microbes and disease
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
Microbes
Lesson Aims:
You will study the 3 types of microbe and how
they can be useful to us.
By the end of the lesson you should be able to
answer these questions
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•
•
•
•
What are they?
What are the main types?
Can they be useful?
Can they cause problems?
Where do they get their energy?
Taipei 101
Taiwan
509m
x300
450m tall
150.0km
tall
1.5km
tall
15.0km
tall
X 1000
X 10000
X 100000
Yeast cells
Our scale
10.0m
0.1mm
Bacteria
Our scale
10.0cm
A virus
Our scale
10.0mm
0.0001mm
Use pages 79 and 80 of the textbook to help you
Type of microorganism
Average size
(mm)
Structure
Found
Uses
Diseases
complete this table
Viruses Bacteria
Fungi
0.0001
Strong cell
wall, no
nucleus
On rotting
food
Aerobic respiration
+
food (glucose)
oxygen
energy
carbon dioxide
+
+
water
Making Bread
Dough = flour + water + yeast + sugar + salt
proving
baking
dough kept in
warm place
at 200oC
Questions for your group
1. 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?
Microbes
•
•
•
•
•
What are they?
What are the main types?
Can they be useful?
Can they cause problems?
Where do they get their energy
True or false?
Statements
T or F
1. Bacteria, viruses and some fungi are micro-organisms.
TRUE
2. Yeast is a type of fungus.
TRUE
3. Bacteria are smaller than viruses.
FALSE
4. There are bacteria in yoghurt.
TRUE
5. Fungi never cause disease.
FALSE
6. AIDS is a disease caused by a virus.
TRUE
7. Viruses need other living cells to reproduce.
TRUE
8. Ringworm is a disease caused by a worm.
FALSE
9. Antibiotics such as penicillin are made by viruses.
FALSE
10. When microbes respire they produce oxygen gas.
FALSE
X 1000
X 10,000