Week 3 Written Assignment.docx - 1 The plasma membrane of a...

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1The plasma membrane of a eukaryotic cell provides protection for the cell by providing a stable barrier between the outside environment and the inside of the cell. Plasma membranes are made up of a phospholipid bilayer, which contains two layers of proteins and cholesterols, and carbohydrates. The breakdown of a phospholipid is a lipid molecule, two fatty acid chains and a phosphate containing group. The plasma membrane in a eukaryotic cell is a very important cellular structure. The plasma membrane controls the movement of waste, organic molecules, water, oxygen and ions. Plasma membranes contain different macromolecules, I will discuss lipids and proteins. The function of lipids in the plasma membrane is making up the phospholipid bilayer which forms a barrier between the outside and inside of the cell. Proteins in the plasma membrane help facilitate transport of certain substances in and out of the membrane.

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