Facilitated diffusion

    Page 5 of 15 - About 141 Essays
  • Membranes

    A membrane is defined as a thin sheet, film, or layer, which works as a selective barrier between two phases that can be liquid or gas.113 In other words, a membrane is an interface between two adjacent phases acting as a selective barrier, regulating the transport between the two components.114 Membranes have gained an important place in chemical technology and are used in a broad range of applications.115,116,117 The key property that is exploited is the ability of a membrane to control the…

    Words: 1540 - Pages: 7
  • Ethanol Disrupts Membranes Lab Report

    Ethanol disrupts membranes by a number of methods. In particular what you must remember is, the size and fluidity of the membrane has a lot to do with the outside and inside environment. This environment consists of how much water, salts etc are in the cell versus out of the cell. Adding ethanol disrupts much of this. 1. Ethanol is permeable to cell membranes. Because of the nature of ethanol as a chemical is it able to get into the cell very easily. This disrupts the balance of the…

    Words: 424 - Pages: 2
  • Blue Beaker Lab Report

    Catherine Delker Honors Chemistry – Yellow Blue Beaker Experiment Lab Report 8/20/15 Blue Bottle Experiment Problem: The purpose of this lab was to determine the oxidation rate of the Methylene blue solution when tested with varying amounts of solution. Background: The Blue Bottle Experiment is a classic demonstration of a Reversible oxidation-reduction reaction with an alkaline solution of glucose that acts as a reducing agent. It is known that, “Methylene blue speeds up the reaction,…

    Words: 685 - Pages: 3
  • Osmosis In The Human Body

    process is called diffusion. In diffusion, particles move in motion at a random speed from a high concentration to an area of low concentration until all of the molecules are dispersed evenly. It is important to remember that involvement with diffusion depends on the concentration. The greater the concentration, the greater the rate of diffusion. Also known as the concentration gradient. Another process in which particles enter and leave cells is osmosis which is a kind of diffusion that…

    Words: 805 - Pages: 4
  • Homeostasis Lab Report

    solution for example. The water inside the cell is hypotonic because it has less of the solute (alcohol). The solution in the cell's environment has a higher concentration than the inside of the cell which means that is hypertonic. This means that diffusion of water (osmosis) will occur. The water inside the cell would diffuse to the outside of the cell when there is a higher concentration of alcohol because there is a lower concentration of water outside the cell. The water would diffuse…

    Words: 666 - Pages: 3
  • Potato Osmolarity Lab Report

    In this experiment, we set out to determine the osmolarity of a potato. In order to do this, we placed potato pieces in seven different solutions of varying sucrose molarity. First, we weighed each potato piece to obtain the initial weight, shown in Figure 1. Then, we split the pieces vertically before placing them in the cubs containing the sucrose solutions. In each cup was a solution of sucrose with a molarity ranging from 0.0M to 0.6M. After placing the potatoes in the cups, we allowed them…

    Words: 275 - Pages: 2
  • Osmosis In Deshelled Chicken Egg Lab Report

    Bahliawah Abstract Throughout the process of this experiment, chicken eggs were used to test how well certain solutions would be absorbed. The objective was to determine the rate and direction of osmosis into and out of cells according to their diffusion gradients. During this experiment eggs were rolled on paper towels to blot the excess liquid and then weighed. They were then placed into one of six solutions immediately afterwards. In 15-minute intervals, the eggs were blotted and weighed…

    Words: 942 - Pages: 4
  • Scavenging Rhetorical Analysis

    The essay is divided into four sections, separated by whitespace. What do each of the sections accomplish? The four sections are each divided based on how to dumpster dive. The author wants the reader to know how he dumpster dives and informs the reader on how to do so. In the first section he claims that when you first begin scavenging, you are filled with disgust and self loathing. In the second section he lets the reader know many people think of it as an art and the objects they find. In…

    Words: 729 - Pages: 3
  • Osmosis Concentration Lab

    cup. This proves that the process of osmosis has happened. Conclusion: In conclusion different concentrations of saline solutions do affect the mass of the baggies due to the effect of osmosis. This also means that what has happened is is the diffusion of molecules from a lower concentration, to a solution of higher concentration. The lower concentration being the baggies. The higher concentration solution being the physiology human solution. Therefore, the research question presented on this…

    Words: 733 - Pages: 3
  • Osmosis And Diffusion Lab Report

    students will investigate the process of osmosis and diffusion in a model membrane system and the effect of solute concentration on water potential, the force created by both physical pressure and solute concentration, as it relates to living plant tissues. Diffusion is the passive movement of molecules or particles from a region of high concentration to an area of low concentration. Particularly, osmosis, a special type of diffusion, is the diffusion of a solvent, usually water molecules,…

    Words: 727 - Pages: 3
  • Page 1 2 3 4 5 6 7 8 9 15

Related Topics:

Popular Topics: