Two illustrations involving salt water demonstrate how osmosis can produce disastrous effects in living things. If you put a carrot in salty water, the salt water will "draw" the water from inside the carrot—which, like the human body and most other forms of life, is mostly made up of water. Within a few hours, the carrot will be limp, its cells shriveled.
By filling Potato osmosis report tubing with different concentrations of sucrose solution and leaving them in water over a period of time a pattern could be observed. Using this information, another experiment was conducted with potato cores submerged in sucrose solution to further examine osmosis.
There were no direct correlations between the findings of both experiments. Therefore, the effect of osmosis is uncorrelated with the kind of solute, but only with the water content of the two solutions.
Introduction Both labs conducted tested the percent change in mass when osmosis occured. The first lab used dialysis tubes with a variety of sucrose concentrations.
When placed in a beaker of water, the tubes were expected to swell with water. This is known as a hypotonic solution.
The second lab tested the osmosis from a beaker of water to a small wedge of potato with different concentrations of water. The concentrations were unknown and it was up to us to infer which one was which. Diffusion is the movement of particles from an area of high concentration to low concentration.
A more specified form of diffusion is osmosis, what was primarily focused on in this lab, and it is the movement of water across a membrane, again from an area of high concentration to low concentration. The main objective of this lab was to obtain a better understanding of osmosis by seeing it in action.
Our hypothesis was that if a solute has a has a high concentration, it will gain more water than if the solute had a lower concentration.
Our experiment was completed with the use of the beakers,dialysis tubing, sucrose solvents and potatoes provided by Mrs. As the data was coming in it was immediately inserted into our data tables to ensure that no data is missing. After the data was completed and submitted the class data was available to compare the results of various groups in the class.
Results Overall, for the first lab our hypothesis was correct, as we submerged the dialysis tubing filled with various solvent concentrations the water would go inside the bag.
Our results from the Distilled Water and 0.
After pulling out the distilled water dialysis tubing we observed a slight error in the tying of the knot which may have corrupted our results and allowed water to pass through the top. Besides our two outliers the data almost forms a linear trend, as the sucrose increases then then so does the final mass of the bag.
Our results may also be slightly skewed due to the time constraints that we were facing. In the Potato Core experiment the majority of our trials were fairly consistent.
Aligning with our predictions the potato in Beaker 4 gained weight of 0. Beaker 1 was the most significant change with a percent difference of From the data obtained we can concur that the most likely result of the loss of mass is due to the water leaving the potato.
Discussion Osmosis is the diffusion of water, in which water moves to areas with high solute concentrations.
This finding agrees with our hypothesis that the semi permeable bag with the 1 mol of sugar will have the most water movement, and will gradient down to the 0 mol distilled waterwhich will have no water movement.
All the water movement will be water going inside the bag. Our results were not what we expected though. The highest percentage of mass change was in the distilled water.North Dakota Barley, Oat and Rye Variety Trial Results for and Selection Guide (A) This publication provide summary tables for the performance of barley, oats and varieties grown in several locations within the state of North Dakota.
Osmosis lab report 1. -A F F E C T O F C O N C E N T R A T I O N O N T H ER A T E O F O S M O S I SPrepared for:BIOLOGYPrepared by:ABDULLRHMAN ZAKIDate:1/12/ 2. Osmosis InvestigationAim:The aim of this experiment is to investigate the effect of changing theconcentration of sucrose on the rate of osmosis in cylinders leslutinsduphoenix.com would.
The Effect of Water Concentration on the Mass of Potato Tissue Essay - The Effect of Water Concentration on the Mass of Potato Tissue Aim: The aim of this investigation is to discover the effect of water concentration on the mass of potato tissue, and also to investigate the movement of osmosis through potato tissue.
Transcript of AP Biology Lab: Osmosis and Potatoes. AP Biology Lab: Osmosis and Potatoes What was the initial task? 1. To determine the isotonic point of a sucrose solution and a potato 2. To determine an unknown concentration of a sucrose solution using a potato. We’re so glad to have you as a member.
You now have access to benefits that can help you choose right, be safe and stay informed. UNITED NATIONS ENVIRONMENT PROGRAMME INTERNATIONAL LABOUR ORGANISATION WORLD HEALTH ORGANIZATION INTERNATIONAL PROGRAMME ON CHEMICAL SAFETY ENVIRONMENTAL HEALTH CRITERIA Aluminium This report contains the collective views of an international group of experts and does not necessarily represent the decisions or the stated policy of .