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GOAL #2: BACTERIA

GOAL #2: BACTERIA. Kingdom. Archaebacteria. Eubacteria. Kingdom Archaebacteria “The Extremists”. Methanogens: Live in swamps and animal digestive tracts Break down organic matter to produce gas (methane) Halophiles Salt-lovers Live in salty water: Great Salt Lake, Utah & The Dead Sea

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GOAL #2: BACTERIA

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  1. GOAL #2: BACTERIA

  2. Kingdom Archaebacteria Eubacteria

  3. Kingdom Archaebacteria“The Extremists” • Methanogens: • Live in swamps and animal digestive tracts • Break down organic matter to produce gas (methane) • Halophiles • Salt-lovers • Live in salty water: Great Salt Lake, Utah & The Dead Sea • Thermophiles/Acidophiles • Heat Lovers/Acid Lovers • Live in hot, acidic water • Produce food for the aquatic food chain

  4. Kingdom Eubacteria “your average, everyday bacteria” • The heterotrophs • Live EVERYWHERE • Use organic molecules as food • The bacteria that make you sick • Photosynthetic autotrophs • Live in places with lots of sunlight • Make their own food from the sun • Ex) Cyanobacteria • Chemosynthetic autotrophs • Make their own food but not from the sun • Convert inorganic molecules into food

  5. http://www.sesamestreet.org/video_player/-/pgpv/videoplayer/0/ce51f043-d1ef-422d-854f-ea7b30f19a94/wash_your_hands_before_you_eathttp://www.sesamestreet.org/video_player/-/pgpv/videoplayer/0/ce51f043-d1ef-422d-854f-ea7b30f19a94/wash_your_hands_before_you_eat

  6. Number of Cells • Unicellular • Each organism is made of one cell. •  Tuberculosis

  7. Type of cells • Prokaryotic • No nucleus

  8. Genetic Material DNA – in one circular chromosome, floating around in the cell.)

  9. Bacteria Structure

  10. Bacterial Shapes Bacilli – rod shaped Spirillum – spiral shaped Cocci - spherical

  11. http://www.sesamestreet.org/video_player/-/pgpv/videoplayer/0/c31c4dc4-157d-11dd-9bc7-777dea8a73e7/i_gotta_be_cleanhttp://www.sesamestreet.org/video_player/-/pgpv/videoplayer/0/c31c4dc4-157d-11dd-9bc7-777dea8a73e7/i_gotta_be_clean

  12. 1. Sexual Reproduction by conjugation Cell connects to another cell by its pilus and transfers its DNA.

  13. 2. Asexual reproductionby binary fission Cell copies DNA, then divides in half.

  14. 3. Bacterial Mummies! 3. Bacteria can turn themselves into SPORES (like mummified bacteria) when the conditions around them get rough. • Forms endospore = forms thick wall and encloses DNA and cytoplasm • When more water or food becomes available, they can “come back to life” again! • Some bacteria can stay spores for YEARS!

  15. Nourishment: • autotrophic bacteria make their own food. • Heterotrophic bacteria must find a food source to feed off.

  16. Movement: Bacteria move using their flagella!  Salmonella

  17. Bacteria & Food • Swiss Cheese • Crunchy Pickles • Yogurt • Vinegar • Sauerkraut Bacteria produce vitamins & help digest foods!

  18. Bacteria & Disease

  19. Bacteria & Medicine Antibiotics made from 1 bacteria that can kill another bacteria • Streptomycin • Bacitracin • Neomycin

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