Temperature Change and Its Impact on Cell Permeability

636 WordsJan 26, 20183 Pages
The cell membrane plays multiple important roles regarding the overall function of the cell such as separating the intracellular parts of the cell from the extracellular environment. One of the main functions of the cell membrane is to regulate the transport of molecules in and out of the cell (Maderin 2009). The cell membrane itself is actually made up of a lipid bilayer which is broken down even more to fatty acid chains, proteins, and cholesterol. The lipids of the bilayer are aphipathic, which means that they have hydrophilic polar heads pointing out and the hydrophobic portion forming the core (Gwen 2001). Within the bilayer, proteins are embedded. These proteins may sometimes pass through the bilayer, or they may be inserted at the cytoplasmic or exterior face. The fluid characteristics of the cell membrane come from this lipid bilayer. The phospholipid bilayer also forms sacks within the plant cell. One surrounds the whole cell, which creates the cell membrane, while another sack surrounds the vacuole (Howard 2003). The special membrane that surrounds the vacuole is known as the tonoplast membrane (Peter 2004). Within the vacuole is a molecule known as betacaynin. Betacyanin is any one type of a group of pigments. It is a nitrogen containing glycosylated compound that is responsible for the red color in the beta vulgaris or beetroot (Encyclopedia 2004).The Betacyanin is stored within the vacuole of the plant cell. At normal temperatures the betacyanin remains within
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