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World 5 · Why Soap Works · 13 min · PRO

Soap against viruses and bacteria

Breaking envelopes and washing things off

PRO · Microbe Zoo

World 5: Why Soap Works is part of PRO

The first world of Microbe Zoo is free. PRO opens the other 27 lessons in 6 worlds — simulations, quizzes and all.

  • The soap molecule
  • Washing hands properly
  • Heat, alcohol and sterilisation
  • What antibiotics are, and what they are not
  • Evolution on a plate
PRO includes
  • All 60 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

Unlock Microbe ZooTry the free world
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