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Biodiversity 5th Grade
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Biodiversity = the variation of life
Beside the Animal Kingdom, what are the other 4 kingdoms?
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Kingdoms Animal Kingdom Plant Kingdom Fungus Kingdom Protist Kingdom
Bacteria Kingdom
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What are Bacteria? Microscopic organisms Uni-celled organisms (1 cell)
Their DNA is NOT inside a nucleus Can be producers, consumers, AND decomposers
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Bacteria Some can produce Endospores: a structure that protects them when environmental conditions are too harsh This helps them to survive hundreds of years
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3 kinds of Bacteria: Cocci = sphere-shaped Bacilli = rod-shaped
Spirilla = spiral-shaped
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Did you know? Bacteria is helpful AND harmful
Antibiotics = bacteria that produce chemicals that limit the growth or kill other bacteria Pathogen = bacteria that causes disease Ex. bacteria that grows in your mouth causes tooth decay –these bacteria grow on the surface of your teeth and use sugar as food
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Examples of Bacterial Infections:
Whooping cough Tetanus Tuberculosis Strep Throat
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What are the differences between bacteria and viruses?
Antibiotic drugs kill bacteria Antibiotic drugs are NOT effective against viruses When a virus enters your body, it invades some of your cells and takes over the cell machinery, redirecting them to produce the virus
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Is the common cold a bacterial infection or a virus?
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Is chickenpox a bacterial infection or a virus?
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Bacteria vs Virus:
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Protist: Uni- or multi-celled organism that lives in moist or wet surroundings HAS a nucleus There are plant-like AND animal-like protists Examples of protists: algae, protozoans
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Plant-like Protists Use sunlight to make their food
But do NOT have roots, stems, and leaves like other plants Each algae cell has to make food
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Animal-like Protist
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Protist example: Example: Malaria
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Fungus Multi-cellular
Like plants, they have cell walls, but unlike plants, fungi do NOT have specialized tissues and organs like leaves and roots HAVE a nucleus do NOT make their own food –no chlorophyll Grow in warm, humid areas
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Fungus = Athlete’s foot
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Fungi = known as the “great decomposers”
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Baker’s Yeast = Fungus Feeds on sugars in flour dough
Causes carbon dioxide to rise Bread would be flat without this fungus
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Fungi examples: *Mushrooms *Mildew *Mold *Yeast
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What is the difference between mold and mildew?
Mold typically grows on food Mildew typically grows on fabric, bathroom walls, other damp surfaces Ex. If you leave your clothes in the washer too long and forget to put them in the drier, they may smell terrible and you have to re-wash them
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Mold: Mildew:
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