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U07 The simplest living things

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  • 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?
  • 4. genetic material What are bacteria like? flagellum capsule cell wall cell membrane cytoplasm
    • Unicellular
    • Prokaryote
    • Most are heterotrophs.
    • Some form colonies.
    • Habitat: all types
    HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS
  • 5. What are protozoa like? Classification (according to the way they move)
    • Unicellular
    • Eukaryotes
    • Heterotrophs
    • Aquatic habitats
    • zooplankton
    CLICK TO LEARN MORE HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Ciliates Rhizopods Sporozoa Flagellates Flagellates
  • 6. Ciliates What are protozoa like? flagellum Classification (according to the way they move) Trypanosoma
    • Unicellular
    • Eukaryotes
    • Heterotrophs
    • Aquatic habitats
    • zooplankton
    Flagellates Rhizopods Sporozoa GO BACK HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS
  • 7. Flagellates Classification (according to the way they move) Paramecium What are protozoa like? cilia
    • Unicellular
    • Eukaryotes
    • Heterotrophs
    • Aquatic habitats
    • zooplankton
    Flagellates Rhizopods Sporozoa GO BACK HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Ciliates
  • 8. Classification (according to the way they move) Rhizopods What are protozoa like? pseudopods Amoeba
    • Unicellular
    • Eukaryotes
    • Heterotrophs
    • Aquatic habitats
    • zooplankton
    Ciliates Sporozoa HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS GO BACK Flagellates Flagellates
  • 9. What are protozoa like? Plasmodium No movement. Classification (according to the way they move) Sporozoa HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS GO BACK
    • Unicellular
    • Eukaryotes
    • Heterotrophs
    • Aquatic habitats
    • zooplankton
    Ciliates Rhizopods Flagellates Flagellates
  • 10. What are algae like? Classification (according to pigment)
    • Unicellular or
    • multicellular
    • Eukaryotes
    • Autotrophs
    • Some form colonies.
    • Aquatic habitats
    • phytoplankton
    CLICK TO LEARN MORE HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Flagellates Brown algae Flagellates Red algae Flagellates Green algae Flagellates Symbiosis between algae and fungi
  • 11. Classification (according to pigment)
    • Unicellular or
    • multicellular
    • Eukaryotes
    • Autotrophs
    • Some form colonies.
    • Aquatic habitats
    • phytoplankton
    What are algae like? Red algae Red pigment GO BACK HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Flagellates Brown algae Flagellates Flagellates Green algae Flagellates Symbiosis between algae and fungi
  • 12. Classification (according to pigment)
    • Unicellular or
    • multicellular
    • Eukaryotes
    • Autotrophs
    • Some form colonies.
    • Aquatic habitats
    • phytoplankton
    What are algae like? Brown algae Green, yellowish pigment HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS GO BACK Flagellates Flagellates Red algae Flagellates Green algae Flagellates Symbiosis between algae and fungi
  • 13.
    • Unicellular or
    • multicellular
    • Eukaryotes
    • Autotrophs
    • Some form colonies.
    • Aquatic habitats
    • phytoplankton
    Green algae What are algae like? chlorophyll Green pigment Classification (according to pigment) Flagellates Brown algae Flagellates Red algae Flagellates HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS GO BACK Flagellates Symbiosis between algae and fungi
  • 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
  • 15. Animation: Monerans and Protoctists HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS
  • 16. Bacteria nutrition Heterotrophs Autotrophs HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Photosynthesis Parasites Saprophytes Symbionts
  • 17. Parasites Heterotrophs Autotrophs Bacteria nutrition
    • feed off living things
    • cause illnesses
    • (tuberculosis, cholera)
    HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Saprophytes Symbionts Photosynthesis
  • 18. Bacteria nutrition Saprophytes Heterotrophs Autotrophs
    • live on dead or
    • decomposing matter
    • are used to make food
    milk cheese yoghurt HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Parasites Symbionts Photosynthesis
  • 19. Bacteria nutrition Symbionts Heterotrophs Autotrophs HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS Parasites Saprophytes
    • live in the bodies
    • of other living things
    intestinal bacteria Photosynthesis
  • 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
  • 24. What is a virus like?
    • Extremely small
    • Obligate parasites
    • Unable to move
    • Extensive habitat
    capsid nucleic acid HIV virus viral envelope (membrane) HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS
  • 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
  • 30. Interactive activity: Protoctists HOME HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS
  • 31. Links HOME HOME RESOURCES CONTENTS CLOSE BACK ACTIVITY LINKS GO TO WEBSITE Microbe zoo GO TO WEBSITE Meet the microbes

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