Biology+1+-+Osmosis+and+Diffusion+Lab

=Osmosis and Diffusion Lab= Osmosis is the movement of water across cell membrane/cell walls through protein channels. The water moves due to water potential of the cells, water moves from an area of high water potential to an area of low water potential. A greater concentration of solutes inside the cell than outside the cell results in a low water potential and the water will respond by moving into the cell. If one area has a great deal of water, it has a high water potential, and if an area has a great deal of solutes, it has a low water potential. In this lab, we were asked to observe the change in mass of potato cores when they are put into different concentrations of sucrose in the solution.
 * Introduction:**




 * Reflection:**
 * +: We were efficient and everybody did their jobs. We got the results we were expecting. We did not have many problems, the experiment went smoothly.
 * -: We did not wait exactly 24 hours, nor did we measure how long it was we waited until we checked the mass again. First we thought we had different graphs but then I realised I had my concentration of sucrose wrong.
 * New Knowledge: I learnt what osmosis and diffusion was, our experiments generally showed how it works.
 * Changes: We could have measured the time we waited in between the two times we measured the masses of the potato cores. We also could have been more precise with the measurements like, the length of potato cores and the volume of the solution.