https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-78/x37589313f9a4c197:life-processes/v/human-digestive-system-in 2025-01-14T13:46:46.197485586Z Human Digestive System The fascinating journey of food through the human digestive system! From the mouth, where digestion begins with saliva, to the stomach, where gastric juices work their magic, and finally to the small and large intestines, where nutrients are absorbed and waste is processed—every step is an incredible process. Learn how organs like the liver, pancreas, and gallbladder play vital roles in breaking down food and supporting digestion. This video breaks down the complex digestive system into simple, easy-to-understand steps. Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Human Digestive System The fascinating journey of food through the human digestive system! From the mouth, where digestion begins with saliva, to the stomach, where gastric juices work their magic, and finally to the small and large intestines, where nutrients are absorbed and waste is processed—every step is an incredible process. Learn how organs like the liver, pancreas, and gallbladder play vital roles in breaking down food and supporting digestion. This video breaks down the complex digestive system into simple, easy-to-understand steps. https://cdn.kastatic.org/ka-youtube-converted/2uL4b1yMhm8.mp4/2uL4b1yMhm8.mp4 492 life process in animals https://www.khanacademy.org/science/uk-science-class-7-new/x2afa7396c019dcda:nutrition-in-animals/x2afa7396c019dcda:digestion-in-humans/e/tooth 2026-04-09T13:10:38.304888012Z Tooth Discover the types of teeth we have, what they do, and how to keep them healthy and strong. Bitasta Datta exercise https://www.khanacademy.org/science/grade-6-science-snc-aligned/x19bc096754f0b9af:human-digestive-system/x19bc096754f0b9af:digestive-system/e/digestion-in-humans 2026-04-09T13:10:38.304888012Z Digestion in humans Let's solve a few questions on the digestive system in a human body. Revathi exercise https://www.khanacademy.org/science/revision-term-1-ka-science-class-7/x05832cca8e86a1ef:week-1/x05832cca8e86a1ef:nutrition-in-animals/e/digestion-in-herbivores-in 2025-03-07T07:41:42.75340024Z Digestion in herbivores Let's solve some questions on digestion in herbivores Vibhor Pandey exercise https://www.khanacademy.org/science/uk-science-class-7-new/x2afa7396c019dcda:nutrition-in-animals/x2afa7396c019dcda:feeding-and-digestion-in-amoeba/v/feeding-in-birds-and-cows 2025-10-01T04:00:43.064865848Z Feeding in Birds and Cows In this video, you’ll learn: 1. Why cows chew, swallow, and then chew again (rumination)? 2. The role of the rumen and microbes in digesting tough cellulose? 3. Why humans can’t digest cellulose (and how fibre helps us instead!)? 4. How birds digest food without teeth? 5. The secret of the proventriculus and gizzard (and why birds swallow tiny stones!) Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Feeding in Birds and Cows In this video, you’ll learn: 1. Why cows chew, swallow, and then chew again (rumination)? 2. The role of the rumen and microbes in digesting tough cellulose? 3. Why humans can’t digest cellulose (and how fibre helps us instead!)? 4. How birds digest food without teeth? 5. The secret of the proventriculus and gizzard (and why birds swallow tiny stones!) https://cdn.kastatic.org/ka-youtube-converted/ZYPnhsZjp4Q.mp4/ZYPnhsZjp4Q.mp4 269 life process in animals https://www.khanacademy.org/science/class-7-science/x0c8b40bd4b242f0b:nutrition-in-animals/x0c8b40bd4b242f0b:feeding-and-digestion-in-micro-organisms/v/holozoic-nutrition 2025-01-14T13:46:46.197485586Z Nutrition in Amoeba Ever wondered how a tiny, single-celled organism like an amoeba eats? In this video, we dive into the fascinating world of amoeba nutrition! Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Nutrition in Amoeba Ever wondered how a tiny, single-celled organism like an amoeba eats? In this video, we dive into the fascinating world of amoeba nutrition! https://cdn.kastatic.org/ka-youtube-converted/I0lz11fB9pM.mp4/I0lz11fB9pM.mp4 402 life process in animals https://www.khanacademy.org/science/uk-science-class-7-new/x2afa7396c019dcda:nutrition-in-animals/x2afa7396c019dcda:feeding-and-digestion-in-amoeba/e/feeding-and-digestion-in-amoeba 2026-04-09T13:10:38.304888012Z Feeding and digestion in amoeba Let's solve a few question on how amoeba obtains and digests its food. Revathi exercise https://www.khanacademy.org/science/uk-science-class-7-new/x2afa7396c019dcda:nutrition-in-animals/x2afa7396c019dcda:feeding-and-digestion-in-amoeba/e/feeding-in-cows-and-birds 2026-04-08T01:15:04.085520103Z Feeding in cows and birds This exercise helps you explore how different animals adapt their digestive systems — from cows chewing cud to birds using gizzards — to suit their food habits. Bitasta Datta exercise https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:plant-physiology/xfa1bbeaa3bc88e64:human-physiology/v/respiration-breathing 2023-07-22T12:58:50.833720644Z Respiration & breathing Let's summarise the important steps of cellular respiration - aerobic respiration and anaerobic respiration - and breathing. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Respiration & breathing Let's summarise the important steps of cellular respiration - aerobic respiration and anaerobic respiration - and breathing. https://cdn.kastatic.org/ka-youtube-converted/dYltl8u7wcE.mp4/dYltl8u7wcE.mp4 349 life process in animals https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:plant-physiology/xfa1bbeaa3bc88e64:human-physiology/e/respiration-in 2026-04-09T13:10:38.304888012Z Respiration and Breathing Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/telangana-class-12-board-preparation/x2416b4dfc60d8eed:week-2/x2416b4dfc60d8eed:respiration/v/mechanism-of-breathing-and-gas-exchange-in 2024-10-11T10:25:47.642944854Z Mechanism of Breathing and Gas Exchange How does breathing work in our body? What makes air enter and leave our body? Inside the body, how does oxygen know where to go? Watch this video to understand the mechanism of breathing and gas exchange. Nivedhitha Suresh video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Mechanism of Breathing and Gas Exchange How does breathing work in our body? What makes air enter and leave our body? Inside the body, how does oxygen know where to go? Watch this video to understand the mechanism of breathing and gas exchange. https://cdn.kastatic.org/ka-youtube-converted/g3e0ybcx8pc.mp4/g3e0ybcx8pc.mp4 651 life process in animals https://www.khanacademy.org/science/uk-science-class-7-new/x2afa7396c019dcda:nutrition-in-animals/x2afa7396c019dcda:respiration-and-gas-exchange/e/mechanism-of-breathing-and-gas-exchange 2026-03-05T08:50:45.400692349Z Mechanism of Breathing and Gas Exchange How breathing and gas exchange occur in the lungs. Nivedhitha Suresh exercise https://www.khanacademy.org/science/uk-science-class-7-new/x2afa7396c019dcda:nutrition-in-animals/x2afa7396c019dcda:breathing-in-animals/v/breathing-in-fishes 2025-10-01T04:00:43.064865848Z Breathing in Fishes In this video, we dive into the fascinating world of fish respiration and uncover how gills work to extract oxygen from water. We’ll explore: 1. Why fish breathe more often than humans 2. The structure of gills (arches, filaments, lamellae) explained simply 3. How water flows in and out of the mouth and operculum 4. The amazing gas exchange process — oxygen in, carbon dioxide out! Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Breathing in Fishes In this video, we dive into the fascinating world of fish respiration and uncover how gills work to extract oxygen from water. We’ll explore: 1. Why fish breathe more often than humans 2. The structure of gills (arches, filaments, lamellae) explained simply 3. How water flows in and out of the mouth and operculum 4. The amazing gas exchange process — oxygen in, carbon dioxide out! https://cdn.kastatic.org/ka-youtube-converted/ypgyvpJKs6A.mp4/ypgyvpJKs6A.mp4 179 life process in animals https://www.khanacademy.org/science/uk-science-class-7-new/x2afa7396c019dcda:nutrition-in-animals/x2afa7396c019dcda:breathing-in-animals/e/breathing-in-different-animals 2026-04-09T13:10:38.304888012Z Breathing in Different Animals This exercise helps you explore how different animals breathe — from lungs in mammals and birds, to gills in fish, skin in earthworms, and unique adaptations in frogs. Bitasta Datta exercise