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Curated by: Khan Academy India - English (6 videos)
Antibiotics are one of the greatest discoveries in science—but did you know their story begins with something as ordinary (and gross!) as mold? In this video, we’ll explore: 🔹 How people in ancient Egypt were already using bread mold to heal wounds. 🔹 The accidental discovery of Penicillin by Alexander Fleming. 🔹 How antibiotics fight bacteria inside our bodies. 🔹 Why antibiotics don’t work on viral infections (like colds & flu). 🔹 The big danger of antibiotic resistance—and what we can do about it. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (https://www.khanacademy.org/science/bmc-grade-9-science/x345505a97fc4a662:useful-and-harmful-microorganisms) Timestamps: 0:00 - Introduction 0:34 - The accidental discovery of Antibiotics 2:11 - What are antibiotics? 2:40 - Only good bacteria secrete antibiotics (Myth or Fact) 3:00 - How do antibiotics like Penicillin and Tetracycline work? 4:07 - Why don’t antibiotics kill our cells? 4:39 - The two types of antibiotics 5:24 - Why should antibiotics only be taken when prescribed by a doctor? 6:22 - Conclusion Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Bitasta Datta