7'2 Bacteria in Your Life

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7.2 Bacteria in Your Life
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Beneficial Bacteria

• Very few bacteria actually cause disease.
• Some bacteria produce chemicals called
  Antibiotics that can prevent growth of other
  bacteria.
• The bacteria in your body produce the vitamin K
  and keep the digestive system.

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Bacteria and the Environment

• Saprophytes - any organism that uses dead
  organisms for food.
• The nutrients are replaced into the soil.
• All plants and animals require Nitrogen for
  nucleic acids and proteins.
• Nitrogen-fixing bacteria can take nitrogen out of
  the air and convert it to fertilizer.

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Bioremediation

• Bioremediation - using bacteria to clean
  pollutants from the environment.
• The bacteria use pollutants as food and turn them
  to harmless compounds.

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Bacteria and Food

• Used for making yogurt, cheese, and buttermilk
  from milk.
• Other bacteria made food include sauerkraut,
  vinegar, pickles, olives and soy sauce.

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Bacteria in Industry

• Bacteria can be used to make large amounts of
  medicines and other products.
• Other Bacteria can be used to make methane by
  digesting wastes.

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Harmful Bacteria

• Pathogens are organisms that cause disease.
• Pathogens cause illness by damaging normal cells.
• Some bacteria produce toxins, poisons.
• Bacteria can produce endospores which can survive
  for hundreds of years.

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Pasteurization

• Pasteurization is a sterilization process.
• Bacterial diseases are usually treated with
  antibiotics.
• A vaccine can treat many bacteria diseases.
• Vaccine is a substance that is made from bits of
  dead or damaged bacteria.