1. The simplest living things HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS CONTENTS RESOURCES ACTIVITY LINKS
2. Contents The simplest living things Protoctist kingdom Protozoa Algae Microorganisms Beneficial or harmful Illnesses Protection Monera kingdom Characteristics Classification Nutrition Reproduction Viruses Characteristics Infection process HOME HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS
3. HOME Resources What are algae like? What are protozoa like? What are bacteria like? How are bacteria classified? Bacteria nutrition How do bacteria reproduce and interact? What is a virus like? Viral infection process Illnesses Protection against infectious diseases HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Animation: Monerans and Protoctists Interactive activity: Protoctists Links Are all microorganisms harmful?
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14. What are lichen? Symbiosis between unicellular algae and fungi unicellular algae fungal hyphae Lichen (under a microscope) Fruticose lichen Types of lichen Foliose lichen Crustose lichen HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS GO BACK
16. Bacteria nutrition Heterotrophs Autotrophs HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Photosynthesis Parasites Saprophytes Symbionts
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20. Bacteria nutrition Heterotrophs P H O T O S Y N T H E S I S cyanobacteria Autotrophs HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Parasites Saprophytes Symbionts oxygen + organic substances carbon dioxide
21. How are bacteria classified? spherical Coccus curved - rod shaped Vibrio Bacillus rod-shaped Spirillum helical HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS
22. How do bacteria reproduce and interact? Binary fission minutes 1.500 1.000 50 Time (in hours) 5 15 20 unfavourable growth of bacteria Environmental conditions Sporulation amount of bacteria (in millions) favourable resistant spores 0 30 60 90 HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS START
23. How do bacteria reproduce and interact? Binary fission minutes 1.500 1.000 50 time (in hours) 5 15 20 unfavourable growth of bacteria Environmental conditions Sporulation amount of bacteria (in millions) favourable resistant spores 0 30 60 90 HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS GO BACK
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25. cell virus Viral infection process The virus enters the cell. Reproduction and assembly of viral components. New viruses leave the cell. 1 1 2 3 2 3 HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS
26. Are all microorganisms harmful? Beneficial microorganisms Harmful microorganisms intestinal flora food antibiotics pathogenic microorganisms spoilage decomposer microorganisms plankton illnesses HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS
27. Infection headache vomiting fever Illnesses caused by microorganisms Transmission sexual transmission in food or water in air skin Female Anopheles mosquito Plasmodium Malaria HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Mortality of some infectious diseases
28. Illnesses caused by microorganisms Transmission sexual transmission in food or water in air skin Number of deaths per 100,000 inhabitants Pneumonia Tuberculosis Diarrhea 1900 1910 1920 1930 1940 1950 1960 1970 1980 250 200 150 100 50 HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS GO BACK
29. Protection against infectious disease Resources Vaccines Antibiotics Alexander Fleming discovered penicillin. Wash your hands before eating. Eat fresh food. Prevention vaccination penicillin Edward Jenner discovered vaccination. HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS