Cell Membrane

Membranes are essential components of all cells. Briefly describe the structure of a eukaryotic plasma membrane, identifying at least two component macromolecules and describing what their basic function is within the membrane. The plasma membrane protects the integrity of the interior of the cell by allowing certain substances in while keeping other substances out. Summarize the manner in which small molecules are permitted to pass through the membrane ensuring you explain the difference between passive, facilitated, active, and coupled transport by comparing and contrasting them. Finally, explain the difference between endocytosis and exocytosis and provide an example of a molecule (remembering to state its function) that is transferred using this method. NOTE Your written assignment should be submitted in a Word document (or similar program) and should be at least 2-3 pages in length, double-spaced with 1-inch margins, and written in Times New Roman size 12 font. You should provide a word count at the end of your written assignment. Cite any reference(s) you use in the preparation of your essay using proper APA format. 

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