bacteria uses notes - Bacteria are vital to the living...

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A. Antibiotic- and Pesticide-resistance 1. Antibiotic- medicine that kills/slows the growth of bacteria 2. Some bacteria with natural resistance will not be killed off by the antibiotics and can re-grow a resistant population quickly 3. When pesticides are used, some insects will already have a natural resistance and survive the spraying, then reproduce more insects that inherit the resistance genes. Eventually the same pesticides will not have the same effect as before. TYPES OF EVOLUTION A. Divergent evolution-organisms that are very similar evolve to become very different B. Convergent Evolution: when unrelated organisms evolve similar adaptations because of similar environment USES of Bacteria Positives: Producers that capture energy by photosynthesis Decompose nutrients in dead matter Sewage treatment Oil spill clean up Making yogurt and cheese Negatives Cause infections Tooth decay Food rotting/spoilage Can overrun lakes and ponds, killing aquatic life Importance of Bacteria
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Unformatted text preview: Bacteria are vital to the living world Producers that capture energy by photosynthesis Others decompose nutrients in dead matter Helps to clean up oil spills Bacterial Disease in Humans Growth of pathogenic bacteria disrupts the body’s equilibrium Bacteria produce diseases in many ways (tooth decay/cavities) Various methods used to control bacterial growth -Sterilization-Personal Hygiene -Disinfectants-Food Processing DISEASES CAUSED BY BACTERIA LYME DISEASE TETANUS TUBERCULOSIS BACTERIAL MENINGITIS STREP THROAT DEFENSE ⇒ Vaccines offer protection for uninfected individuals ⇒ Vaccines are made from killed or weakened strains that cause antibody production but not the disease. ⇒ Anti-bodies-proteins in the body that identify invaders and flag them for death. ⇒ Viruses have no cell walls Are viruses LIVING OR NONLIVING? ⇒ Not considered to be alive ⇒ They do depend on living things ⇒ Cannot reproduce on their own...
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