Cell Membrane/ Electron Transport Chain / Biochemical Pathway :: essays research papers

1. The jail cell tissue layer structure is vital to the life of the cell. The cell membrane is molded as having a phosphate head at the very forbiddener surface, and two fatty acid tail coat abeyance from it. The membrane is double, so at the tip of the fatty acid tails, on that point are two more fatty acid tails given to another phosphate head. This is what it looks like                          The reason the cell membrane is shaped like this is mainly to control the water system f mild in and out of the cell. Water is very important to the cell if too much water enters the cell, the cell pass on explode, and if too much water leaves the cell, the cell will shrivel up and die. This is how the cell membrane controls water flow the phosphate heads are polar, and slightly attract water. However, the fatty acid tails in between are non polar, and repel water, so the fatty acid tails prevent too much water from entering or exit the cell. With this tough membrane, there has to be a way for things to enter the cell. This is where the thoroughfare proteins come in. They act as gate shipway to the cell. There are many shipway to enter the cell. Some ways require energy, while others dont. The ways that require energy are put into a category called dynamical please, while the ways that dont require energy are put into a category called passive lift. An example of active transport is the proton pump. The proton pump is an integral part of chemiosmosis, and it pumps protons from an playing area of low parsimony to an area of high concentration. This requires energy since things like to move from an area of high concentration to an area of low concentration. An example of passive transport is facilitated diffusion. This is very painless since the particle is moving from an area of high concentration to an area of low concentration and through a channel pr otein made exactly for its size of it and shape.2. These membranes are very important to the electron transport chain. This is because they house the membrane proteins that make up the electron transport chain. The two electron transport chains are similar in that they both make adenosine triphosphate by chemiosmosis, and they are different in the fact that they pump protons in different directions the electron transport chain in the thylakoid layer pumps protons in the cell (from an area of low concentration to an area of high concentration) and then the protons are forced out through the ATP synthetase channel.