https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/small-intestine-part-3-absorption 2023-08-17T23:33:36.770424498Z Small intestine 3: Absorption This video explains the absorption process of monomers in our body. It details how amino acids, sugars, nucleosides, and fats are transported into cells using primary and secondary active transport. The video also highlights the role of ATP and ion gradients in this process. Raja Narayan video https://cdn.kastatic.org/googleusercontent/tyNkccFdzEWS0bhaKb2-b4NhlpA-v2dZFCvJ4DhUcPP68gMQQ3mTizNgYlR8fg8WvKYOW-1jN8Iw_Eo_nrO17Z93RA Small intestine 3: Absorption This video explains the absorption process of monomers in our body. It details how amino acids, sugars, nucleosides, and fats are transported into cells using primary and secondary active transport. The video also highlights the role of ATP and ion gradients in this process. https://cdn.kastatic.org/ka-youtube-converted/7zq3s3F5Do8.mp4/7zq3s3F5Do8.mp4 295 Absorption and assimilation https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:human-nutrition/x2a084a90105205d2:absorption-and-assimilation/e/absorption-of-digested-food 2025-11-24T17:20:50.952945651Z Absorption of Digested Food This exercise covers absorption mechanisms in the small intestine, including diffusion, facilitated transport, and active transport; how carbohydrates, proteins, lipids, and vitamins enter epithelial cells; and how absorbed nutrients move into blood or lymph. Khan Academy exercise https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/liver 2023-08-17T23:33:36.770424498Z Liver The liver, a unique organ with regenerative abilities, plays a crucial role in metabolism, nutrient storage, and detoxification. It breaks down nutrients (catabolism) and builds larger macromolecules (anabolism). It stores carbohydrates and fats as glycogen, lipoproteins, and triglycerides. The liver also detoxifies toxins using cytochrome P450 enzymes, impacting drug efficacy. Lastly, it produces bile essential for fat absorption. Raja Narayan video https://cdn.kastatic.org/googleusercontent/FsTpHwN2TaujU3D6wowSzktL1XJqfnZxDUWJo6I6NMTCI4l-KZoUFwLAuIQXP22siRGX07xY9bfIDYyJtid6_y8 Liver The liver, a unique organ with regenerative abilities, plays a crucial role in metabolism, nutrient storage, and detoxification. It breaks down nutrients (catabolism) and builds larger macromolecules (anabolism). It stores carbohydrates and fats as glycogen, lipoproteins, and triglycerides. The liver also detoxifies toxins using cytochrome P450 enzymes, impacting drug efficacy. Lastly, it produces bile essential for fat absorption. https://cdn.kastatic.org/ka-youtube-converted/rDjWrNRKfvg.mp4/rDjWrNRKfvg.mp4 388 Absorption and assimilation