Diffusion and Osmosis Introduction: Purpose: 1. To simulate and observe the diffusion of solutes and the osmosis of water through a semipermeable membrane through color change and sugar tests. 2. To speculate osmosis occurring in dialysis bags and potato cores by comparing percentage change in masses. Background information: Molecules are always in random‚ constant movement due to their kinetic energy. This causes the molecules of a cell to move around and bump into each other. The random
Premium Osmosis Cell wall
transport of materials in three semi-permeable membranes: dialysis tubing‚ eggs‚ and onion cells. Background Information 1. Diffusion is the movement of solutes from high to low concentration. Osmosis is the movement of water from low to high concentration. Both refer to movement in/out of a cell‚ but osmosis refers specifically to water. 2. Isotonic‚ hypertonic‚ and hypotonic all refer to the comparison of concentrations of solutes in verses out of the cell. Isotonic is when the concentration in
Premium Cell membrane Concentration Ethanol
something similar in Ireland. He strongly believed that all Irish people; Catholic or Protestant‚ should have a say in Parliament. He was disgusted that only wealthy Protestants could become MPs and have a say in Parliament when the decisions that were made there
Premium United States French Revolution United States Declaration of Independence
An experiment to find the percentage of three separated components Research Question: Is it possible to separate salt‚ sand and iron filings from each other in a mixture‚ to figure out the percentage of each component in the original mixture? Background Research: In this Investigation‚ I will be separating sand‚ salt‚ iron fillings in a mixture and finding their percentages. Iron is a magnetic solid which is incapable of being dissolved in water. Salt is a non-magnetic solid which is capable
Premium Evaporation Water Liquid
The difference between bacteria‚ viruses‚ fungi and parasites are: Bacteria are single celled organisms that can rapidly multiple themselves every 10 minutes up to 10 times each bacterial cell‚ but they do not live or reproduce in a human cell. When threatened they will make a copy of their DNA to enable them to come back to life in the right conditions. They are able to survive in most extreme living conditions including with and without oxygen‚ there are various types of bacteria such as Cocci/Coccus
Premium Bacteria Organism
TotalHome and del Norte. By the end of 2001‚ 10% of Home Depot’s stores were located outside the United States. 3.2 Lowe’s did not yet have an international presence. 4. Alternative Retail Format 4.1 Lowe’s specifically targeted the professional customer with a section of its Web site: “Accent & Style” offered decorating and design tips on such subjects as kitchens and
Premium Marketing Strategic management Management
Osmosis Lab Report by Evan Gerber Claire Cambron First Lab Report Wednesday 10:30am February 20‚ 2013 Theresa Gburek Abstract The major objective of the experiment was to test the effect of the concentration gradient on the diffusion rate. It was hypothesized that the greater the stronger the concentration gradient‚ the faster the rate of diffusion would be. To test this‚ dialysis tubes were submerged in different concentration fructose solutions. We weighed the tubes at specific
Premium Osmosis Concentration Diffusion
Investigation - Osmosis in Potato Cells 9/7/04 Section 1 Planning Aim What is the aim of your experiment? What do you want to find out? The aim of this experiment is to investigate how potato tissue changes when placed in sucrose solution of different concentrations. Therefore‚ I want to find out if and how osmosis differs‚ when the concentration is changed. Variables What is the variable you are going to change in the experiment? The input variable of this experiment (i.e
Premium DNA Genetically modified food Gene
proposals‚ set priorities to influence Congress agenda along with bargaining Concessions for votes‚ this goes along with the Power of Persuasion with the access of media in terms of Bully Pulpit‚ and in other words this is the real power of the presidency were he use this power to persuade citizens into following his lead. Another informal power of the president is making executive agreements‚ International agreements made by the president that has the force of treaty. In addition to‚ the president being
Premium President of the United States United States Congress United States
become more original in her homework and testing as well. John is all over the place with his writing. Not only that‚ but he is being more precise on what he’s describing. Although he’s applying all four of the learning patterns‚ he could stand to use a little more detail in his writing so that the reader understands what he is trying to say. A little more technical learning
Premium Writing Essay Learning