Biology and Biotechnology - Dr. Leopold - HW 3.docx

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Palash Mehta July 29, 2012 Dr. Leopold Summer II 2012 CH281: Biology and Biotechnology HW Assignment #3 1) The plasma membrane is an important place for cell signaling. Why is the plasma membrane featured in this discussion? Can the same types of signaling occur on the membranes of organelles within the cell? The plasma membrane is an important place for signaling because it needs to be able to identify what has to come into the cell and what comes out. In addition, the plasma membrane has many receptors and mechanisms that allow the cell to bind with other cells. It is extremely vital to talk about the plasma membrane because it is the primary coverage of the cell. It features many different methods of diffusion and transport that control what has to come in and what come out, despite the concentration on either side. This is the primary barrier that keeps the cell alive and protects the ever important DNA in the center. The organelles feature similar membranes. For instance, certain organelles that have vesicles connected to another organelle need the barrier so
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