Click here to see more videos: https://alugha.com/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. SUBSCRIBE to the FuseSchool 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. JOIN our platform and access a deeper Learning Experience at www.fuseschool.org. These videos can be used in a flipped classroom model or as a revision aid. Twitter: https://twitter.com/fuseSchool Friend us: http://www.facebook.com/fuseschool This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org
Let’s discover some more circle theorems so that we can solve all types of geometrical puzzles. We discovered these 4 theorems in part 1: Angle at the centre is double the angle at the circumference The angle in a semi-circle is 90 degrees Angles in the same segment are equal / Angles subtended by
Click here to see more videos: https://alugha.com/FuseSchool If we don't have the vertical height of a triangle, then we can find the area of the triangle using 1/2absinC. In this video we are going to discover where this formula comes from. The formula is based on area = 1/2 base X height and a
Click here to see more videos: https://alugha.com/FuseSchool Learn the basics about the principles of green chemistry as a part of the environmental chemistry topic. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. This
