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Good and Bad Microorganisms

Explore the world of microorganisms - some beneficial, like bacteria used in cheese-making, others harmful, causing sickness like food poisoning. Learn about helpful fungi like penicillin and the dangers of harmful fungi causing mold and infections.

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Good and Bad Microorganisms

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  1. Good and Bad Microorganisms

  2. VIDEO

  3. Microorganisms • Microorganisms are living things you cannot see without a microscope. • Some are helpful while others are harmful.

  4. Helpful Microorganisms • Bacteria live on and in our bodies and keep us alive!

  5. Helpful Bacteria • Bacteria are used to make cheese and yogurt! • Different types of bacteria cause different tastes!

  6. Helpful Fungus • Mold is a type of fungus. • A mold called penicillin is an antibiotic (medicine) we take to kill bad bacteria.

  7. Bad bacteria Penicillin

  8. Helpful Fungus • Yeast is another type of fungus. • We use yeast when baking bread (releases CO2) and to make wine (creates ethanol).

  9. Harmful Microorganisms • Some microorganisms make us very sick and destroy our food.

  10. Harmful Bacteria • Some types of bacteria are responsible for sicknesses such as pneumonia and food poisoning.

  11. Harmful Fungus • Fungus can cause things such as: • Mold on food • Athlete's Foot • Dandruff

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