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Kingdom Monera (Bacteria)
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Ciera Verschneider 2009
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Characteristics of Bacteria 1 celled organism (unicellular) Does not have a nuclear membrane Chromosome is a single long chain Lacks organelles like mitochondria or chloroplasts how big are they? http://learn.genetics.utah.edu/conten t/begin/cells/scale/ http://learn.genetics.utah.edu/conten t/begin/cells/scale/
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Shapes Cocci Round spheres
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Bacilli Rods (pieces of chalk)
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Spirilli Corkscrews
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Movement Some bacteria have flagella to help them move Flagella are whiplike tails
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Reproduction Fission One parent cell splits into 2 daughter cells after doubling its DNA Daughter cells are clones
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Breathing Aerobes use oxygen Anaerobes do not use oxygen
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Cyanobacteria Blue green bacteria make food using Sunlight, CO 2, and water due to a colored pigment called Chlorophyll
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Good bacteria Used to make foods like Cheese Sauerkraut Yogurt And vinegar
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Saprophyte Decomposer: breaks down dead materials (recycles)
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Nitrogen fixing bacteria Help farmers to grow plants (works like fertilizer)
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Industry uses for Make medicine, Enzymes, Cleaners Glues Etc.
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Bad Bacteria Pathogen Bacteria that causes disease Treat with ANTIBIOTICS Prevent with VACCINATION
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Virus No cells Only reproduce inside other cells No form of respiration (energy)
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Graphic image on next slide
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Smallpox
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Reproduction Attach to outside of host cell Inject DNA into host, becomes part of host DNA
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Copy: host makes copies of virus Release: host cell bursts, viruses leave to infect new cells
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Prevent with VACCINE First vaccine made by Jenner in 1600’s Used his SON to prevent SMALLPOX
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To make a vaccine 1. Kill virus DNA
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2. Inject dead virus into an animal 3. Animal makes memory cells (white blood cells or T4 cells) 4. That is your immune system WBC’s make antibodies (14-21 days) 5. BAM! next time it recognizes the protein coat of a real one, Kills it dead
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Famous Science Dudes Leeuvenhoek Microscope
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2. Edward Jenner 1600’s Made first vaccine to smallpox virus Tested it on his son
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3. Louis Pasteur (1850’s) Proved bacteria cause disease Created first rabies vaccine Pasteurization Quickly heat and then cool milk To kill bacteria, but keeps flavor
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4. Josef Lister (1850’s) Germ Theory of Disease Proved patients would live if doctors and nurses washed their hands in carbolic acid Hospitals were a place to go to die They smelled like rotting meat
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Alexander Fleming (1928) went away for vacation, and left some agar plates on the shelf came back and noticed no bacteria were growing around a spot of fungus The fungus was Penicillium notatum, and we now use an extract of the fungus as PENICILLIN (an antibiotic) Penicillin does not let bacteria form a cell wall
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5. Jonas Salk (1940’s) Polio vaccine
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