1. The cell membrane structure is vital to the life of the cell. The cell membrane is shaped as having a phosphate head at the very outer surface, and two fatty acid tails hanging from it. The membrane is double, so at the tip of the fatty acid tails, there are two more fatty acid tails attached 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 flow in and out of the cell. Water is very important to the cell: if too much water enters the cell, the cell will 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 leaving the cell. With this tough membrane, there has to be a way for things to

ort is the proton pump. The proton pump is an integral part of chemiosmosis, and it pumps protons from an area of low concentration 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 easy since the particle is moving from an area of high concentration to an area of low concentration and through a channel protein made exactly for its size and shape.

3. Biochemical pathways play a very important role in our body. A biochemical pathway is basically a group of enzymes that all work on a substrate to turn it into the end product. This is how it works: the reactant binds with the first enzyme to become reactant # 2, then reactant 2 binds with enzyme 2 to become reactant 3, and reactant 3 binds with enzyme 3 to become reactant 4, and so on. This goes on until the last reactant binds with the last enzyme forming the end product. When the cell has

Some topics in this essay:
Biochemical Pathway, electron transport, enzyme #1, fatty acid, fatty acid tails, electron transport chain, acid tails, low concentration, transport chain, cell membrane, site enzyme #1, site enzyme, binds enzyme, biochemical pathway, Transport Chain, low concentration concentration, allosteric site enzyme,