1 osmosis and diffusion abstract: this lab is composed of instructor demonstrations, as well as student run experiments meant to demonstrate the various principles regarding osmosis and diffusion. The processes of diffusion and osmosis account for much of the passive movement of molecules at the cellular level in this laboratory, you will study some of the basic principles of molecular movement in solution and perform a series of activities to investigate these processes. Osmosis is the diffusion of water from a high concentration to a low concentration and water was the variable being tested in this activity because it is what made the mass increase for every sucrose solution.
To explore osmosis and diffusion students finish by observing osmosis in living cells timing and length of the lab this investigation requires a minimum of four laboratory periods of about 45 minutes each, plus time for discussions and measurements there are three subparts, each diffusion and osmosis. Ap biology lab #1: diffusion and osmosis purpose: in this lab, we will be conducting an experiment where we will observe the acts of passive transport: diffusion and osmosis the experiment will show how molecules in a solution are able to move from an area of high concentration to an area of low concentration. Osmosis is a specialized type of diffusion: the diffusion of water in both diffusion and osmosis, materials move down a concentration gradient , the difference in the number of molecules between.
To use the properties of diffusion and osmosis to see the effects of either corn syrup or water on a shell-less raw egg over a three day period while looking to see the effects of these liquids on the raw egg, one can also apply the properties of hypotonic, hypertonic, and isotonic solutions.
Diffusion and osmosis experiment with a shell-less egg after three days of testing methods with water and corn syrup lisa july 1, 2013 purpose to use the properties of diffusion and osmosis to see the effects of either corn syrup or water on a shell-less raw egg over a three day period.
Lab 1 osmosis & diffusion osmosis lab introduction: cells have kinetic energy this causes the molecules of the cell to move around and bump into each other diffusion is one result of this molecular movement diffusion is the random movement of molecules from an area of higher concentration to areas of lower concentration osmosis. Ap biology lab 1 - diffusion & osmosis paul andersen starts with a brief description of diffusion and osmosis he then describes the diffusion demonstration and how molecules move over time he then explains the concepts behind the osmosis lab and how potatoes are affected by increasing sucrose molarity.
The diffusion of water across a selectively permeable membrane tonicity the ability of a solution to cause a cell to gain or lose water it depends partly on the concentration of non-penetrating solutes relative to the inside of a cell.