https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:disease-and-immunity/x2a084a90105205d2:antibiotics/v/antibiotics-useful-and-harmful-microbes-grade-9-science-khan-academy-1080p 2026-04-20T05:10:45.627247989Z Antibiotics-Useful and Harmful Microbes Antibiotics useful and harmful microbes Khan Academy Pakistan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Antibiotics-Useful and Harmful Microbes Antibiotics useful and harmful microbes https://cdn.kastatic.org/ka-youtube-converted/XLeIMjwfZhQ.mp4/XLeIMjwfZhQ.mp4 401 Antibiotics https://www.khanacademy.org/college-careers-more/bjc/2015-challenge/2015-life-science/v/bjc-mrsa 2020-11-18T19:37:53Z Combating MRSA with echinacea By Mekhala Rao Methicillin resistant staphylococcus aureus is a rising global threat. In the US alone, the annual economic burden of community associated MRSA is 13.8 billion, and there were about 94,000 reported cases. In a future with no cure to this bacteria, society is at an extreme risk. Echinacea provides a simple, cheap, solution. video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Combating MRSA with echinacea By Mekhala Rao Methicillin resistant staphylococcus aureus is a rising global threat. In the US alone, the annual economic burden of community associated MRSA is 13.8 billion, and there were about 94,000 reported cases. In a future with no cure to this bacteria, society is at an extreme risk. Echinacea provides a simple, cheap, solution. https://cdn.kastatic.org/ka-youtube-converted/U54eiNoWaN8.mp4/U54eiNoWaN8.mp4 615 Antibiotics https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:disease-and-immunity/x2a084a90105205d2:antibiotics/a/antibiotics-an-overview 2021-04-29T07:58:37Z Antibiotics: An overview article https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:disease-and-immunity/x2a084a90105205d2:antibiotics/a/what-is-antibiotic-resistance 2021-04-29T08:00:54Z What is antibiotic resistance? article https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:disease-and-immunity/x2a084a90105205d2:antibiotics/e/antibiotic-resistance 2026-04-22T04:30:43.362363602Z Antimicrobial Resistance An exercise about gauges proficiency at understanding antibiotic resistance. Joel Prakash Stephen exercise https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:disease-and-immunity/x2a084a90105205d2:antibiotics/e/antibiotics 2026-04-15T10:20:35.936477099Z Antibiotics This exercise dives deep into the fascinating world of antibiotics—not just what they are, but how they work, when they should (and shouldn't!) be used, and the science stories behind their discovery. Bitasta Datta exercise