Assignment - Lab Report Example

Lab assignment Purpose The purpose of the experiment was to evaluate the diffusion and osmosis process across semipermeable membranes. The main aim of the experiment was to examine the movement of materials across dialysis tubing. The dialysis tubing was used in this experiment since is form a semi-permeable membrane or tubing that has properties of cellulose and cellophane membranes; thus, the membrane is vital in investigating the properties of real cell membranes. Moreover, it perfectly responds to water as a solvent.

Notably, the movement of these materials depended on the concentration of the solution and the permeable membrane involved in the movement.HypothesisThe main this experiment was to demonstrate that an active cell allows the movement of certain substances across the cell membrane through a different process.PredictionsThe movement of material across the dialysis membrane depended on the concentration of the materials across the membrane. Notably, highly concentrated solutions were expected to move from high to low concentrations through the diffusion process.

Additionally, materials were also expected to move from regions of low concentration to high concentration across the membrane (movement of the experimental material out of the membrane) through the osmosis process. Finally, at a certain point or zero concentration gradient, no movement of materials across the cell was expected.ResultsTubeSolution in the tubeConcentration of the solution in the tubeTonicity of the solution (compared to the Cell)Direction of movement of waterScientificterm1910%IsoEqual Normal 21090%hyperOut Crenation 3 0100%hypoIn Lysis ConclusionThe concentration of any given solution determines the movement of materials across any semi or permeable membrane.

The movement of water molecules or materials from regions of high concentration to regions of low concentration refers to the diffusion of materials. The materials are expected to move from regions of low concentration to regions of high concentration in a process termed osmosis. These movements are attempts of creating balance or equilibrium in concentration within the regions around any given cell membrane. Therefore, when the concentrations between the membranes are of equal concentration, there shall be no movement of material across the membrane.