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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 • • • • • 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