https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-2/x04828215b460a495:the-world-of-microorganisms-part-i-ii/v/classification-understanding-microorganism-middle-school-science-khan-academy 2025-01-08T02:29:38.725066879Z Classification of Microorganisms Discover how microorganisms are grouped into categories like bacteria, fungi, algae, protozoa, and viruses based on their shape, structure, and life processes. Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Classification of Microorganisms Discover how microorganisms are grouped into categories like bacteria, fungi, algae, protozoa, and viruses based on their shape, structure, and life processes. https://cdn.kastatic.org/ka-youtube-converted/Q-eLlmnf72g.mp4/Q-eLlmnf72g.mp4 444 The world of Microorganisms Part I&II https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-2/x04828215b460a495:the-world-of-microorganisms-part-i-ii/e/lo-5-1-micro-organisms-fundamentals 2026-04-06T02:41:58.374508961Z Micro-organisms (Fundamentals) Let's solve some problems to better understands some fundamental properties of micro-organisms. Aakash Bagga exercise https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-2/x04828215b460a495:the-world-of-microorganisms-part-i-ii/v/antimicrobial-resistance 2025-06-19T04:39:32.416182101Z Antimicrobial Resistance Learn how antimicrobial resistance develops! Explore the history of antibiotics, how they work, and how bacterial mutations lead to resistance — plus solutions — in this engaging middle school science video. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/mh-grade-8-science?lang=en Timestamps: 0:00 Historical Intro 0:55 Working of Antibiotics 1:49 Mutations 4:19 Solution 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 Joel Prakash Stephen Joel Prakash Stephen video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Antimicrobial Resistance Learn how antimicrobial resistance develops! Explore the history of antibiotics, how they work, and how bacterial mutations lead to resistance — plus solutions — in this engaging middle school science video. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/mh-grade-8-science?lang=en Timestamps: 0:00 Historical Intro 0:55 Working of Antibiotics 1:49 Mutations 4:19 Solution 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 Joel Prakash Stephen https://cdn.kastatic.org/ka-youtube-converted/TzszIMs4xdU.mp4/TzszIMs4xdU.mp4 420 The world of Microorganisms Part I&II https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-2/x04828215b460a495:the-world-of-microorganisms-part-i-ii/e/antibiotic-resistance 2026-04-06T02:41:58.374508961Z Antimicrobial Resistance An exercise about gauges proficiency at understanding antibiotic resistance. Joel Prakash Stephen exercise https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-2/x04828215b460a495:the-world-of-microorganisms-part-i-ii/e/lo-5-2-diseases-caused-by-microorganisms 2026-04-07T22:23:57.656416987Z Diseases caused by microorganisms Let's solve some problems to better understand what are the diseases caused by microorganisms Aakash Bagga exercise https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-2/x04828215b460a495:the-world-of-microorganisms-part-i-ii/v/food-protection-preservation-part-1 2024-12-29T07:21:40.948705593Z Food Protection & Preservation Part-1 In this video, we’ll dive into the amazing techniques we use every day to keep food safe and fresh. Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Food Protection & Preservation Part-1 In this video, we’ll dive into the amazing techniques we use every day to keep food safe and fresh. https://cdn.kastatic.org/ka-youtube-converted/YrMjjX-M0o0.mp4/YrMjjX-M0o0.mp4 382 The world of Microorganisms Part I&II https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-2/x04828215b460a495:the-world-of-microorganisms-part-i-ii/e/methods-of-food-protection 2025-04-06T12:02:31.479792688Z Methods of food protection Let's practice! vibhor exercise https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-2/x04828215b460a495:the-world-of-microorganisms-part-i-ii/v/nitrogen-fixing-middle-school-science-khan-academy 2025-03-06T03:29:07.687997642Z Nitrogen Fixing Ever wondered why plants need nitrogen but can’t just take it from the air? Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Nitrogen Fixing Ever wondered why plants need nitrogen but can’t just take it from the air? https://cdn.kastatic.org/ka-youtube-converted/iQmLJ6zZxcI.mp4/iQmLJ6zZxcI.mp4 411 The world of Microorganisms Part I&II https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-2/x04828215b460a495:the-world-of-microorganisms-part-i-ii/v/nitrogen-cycle-middle-school-science-khan-academy 2025-03-06T03:29:07.687997642Z Nitrogen Cycle Did you know that nitrogen keeps moving through the air, soil, plants, and animals in a never-ending cycle? Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Nitrogen Cycle Did you know that nitrogen keeps moving through the air, soil, plants, and animals in a never-ending cycle? https://cdn.kastatic.org/ka-youtube-converted/rDFVzVOkcPs.mp4/rDFVzVOkcPs.mp4 256 The world of Microorganisms Part I&II https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-2/x04828215b460a495:the-world-of-microorganisms-part-i-ii/e/nitrogen-fixing-and-nitrogen-cycle 2026-04-09T13:10:38.304888012Z Nitrogen fixing and nitrogen cycle Let answer some questions! Shankar R exercise