Transport in Cells: Diffusion and Osmosis | Cells | Biology | FuseSchool скачать в хорошем качестве

Transport in Cells: Diffusion and Osmosis | Cells | Biology | FuseSchool

Transport in Cells: Diffusion and Osmosis | Cells | Biology | FuseSchool In this video we are going to discover how cells take in useful substances and remove waste using three methods of transportation: diffusion, osmosis and then in the second part we will look at active transport. The exchange of materials occurs between cells and their environment, across the cell membrane. To make this exchange as efficient as possible, some organisms have evolved specialised exchange surfaces like the alveoli in the lungs, or root hairs in plants or the nephrons in kidneys. Depending upon what is being exchanged and which direction along the concentration gradient things are travelling will determine whether diffusion, osmosis or active transport will be used. Diffusion is the process in which particles spread out from each other. They move from high concentration to an area of low concentration,down the concentration gradient until they are evenly distributed. Osmosis is very similar to diffusion but just for water. It is the movement of water into or out of a cell. Again, it is the movement from a dilute solution (so high concentration of water molecules) down the concentration gradient to a more concentrated solution - so low concentration of water molecules. The water molecules move across a partially permeable membrane. Watch part 2 to learn about active transport:    • Transport In Cells: Active Transport | Cel...   SUPPORT US ON PATREON   / fuseschool   SUBSCRIBE to the FuseSchool YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you. These videos can be used in a flipped classroom model or as a revision aid. Find all of our Chemistry videos here:    • CHEMISTRY   Find all of our Biology videos here:    • BIOLOGY   Find all of our Physics videos here:    • PHYSICS   Find all of our Maths videos here:    • MATHS   Instagram:   / fuseschool   Facebook:   / fuseschool   Twitter:   / fuseschool   Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org Follow us:    / fuseschool   Befriend us:   / fuseschool   This is an Open Educational Resource. If you would like to use the video, please contact us: [email protected]