The Effect Of Plasma On The Membrane Performance

1008 Words5 Pages
Introduction When put under stress, at some point materials begin to decline and perform poorly. Cell membranes are no different. The specific design and structure of plasma membranes allows for the regular function of cells through transportation, facilitating reactions, and several other tasks carried out by the cell membrane and endomembrane system. When put under physical or chemical stress, however, the plasma membrane begins to falter and will eventually become unable to perform its tasks, which are necessary to cell life. Using beet root tissue, the relationship between membrane performance and temperature was tested. 3 samples of beet were prepared and placed in a 50% methanol solution and exposed to temperatures above, below, and at room temperature. The membrane’s performance in repelling an unwanted solution in adverse conditions was measured by the amount of damaged membranes, which resulted in increases in released pigments. This lab’s hypothesis is: varying temperature will have an inverse effect on the membrane performance. The membrane will perform more poorly under increased heat than increased cold, but both changes in temperature will negatively affect the performance of the membrane. This will be measured by amount of light reflected by the spectrophotometer, reflecting how much pigment was given off, and therefore how many membranes were compromised. The independent variable is the temperature the sample is put through, and the controlled variables
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