Lab Report Testing Membranes

Lab Report for Labs 2&3






Membrane one Under Osmosis
&
Biological Membranes: Amphipathic and Alcohol Membranes








By: Annika Bauer
parting: 8

Introduction
Each living organisms has cellphones and each of these cells have membranes. Because of their phospholipid bilayer, cell membranes atomic number 18 able to control what enters and exits the cell including water, waste, and other molecules. The small move of the membrane that create this bilayer ar phospholipids, each containing a hydrophilic head and hydrophobic tails. Being hydrophilic (attracted to water), the heads arrange themselves so that they are in contacts with water, leaving the hydrophobic tails (repelled by water) only in contact with each other, thus creating a bilayer membrane.
Cell Membranes are what controls what enters and what exits the cell by the process of osmosis. When a cell is places in a solution in which the submersion of a solute in the environ environment is greater than the ingress within the cell, it is hypertonic. Water lead leave the cell in order to dilute its surroundings. This will shrink and damage the cells interior.



However, when is it hardened in a solution where the ingress of the solute in the surrounding environment is less than the concentration within the cell, it is hypotonic. When this occurs, the cell will take on water and swell, still damaging the cells interior. When the concentrations are equal, it is isotonic; therefore, no water is needed to dilute the solutions and the cell remains the same.
Cells react oppositely when set in different solutions and in this experiment those reactions will be observed. By utilize beet slices and their betacyanin, tests will be conducted using a spectrophotometer in order to determine how much damage a sure solution does to a cell.
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