Year 9 Biology
This week Year 9 Biology lesson has been about how specialised exchange surfaces, and transport systems, allow substances to pass into and out of living organisms. The practical involved pupils modelling the action of the intestines on digested food, and how the permeability and moistness of the internal surfaces increase the rate of transport of food molecules into the blood stream. In other words they mashed up food and squeezed it through the leg of a pair of tights, collecting the small particles that made it through, leaving the waste in the tights.
Mr Richard Haworth – Head of Science Senior School
Published on: 24th February 2016