Chapter_4_Learning_Objectives (2)

Chapter_4_Learning_Objectives (2) - Chapter Learning...

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Chapter Learning Objectives Chapter 4: Cell Membrane Structure and Function 4.1 How is the structure of a membrane related to its function? Explain why phospholipids are both hydrophilic and hydrophobic o Phospholipids have hydrophilic heads form the outer borders and the hydrophobic tails “hide” inside. The hydrophilic heads face both the cytoplasm and the extracellular fluid, forming the outer layer of the bilayer. Hydrophobic interactions cause the phospholipid tails to hide inside the bilayer. List the three major functions of the cell membrane o It selectively isolates the cell’s contents from the external environment. o It regulates the exchange of essential substances between the cell’s contents and the external environment. o It communicates with other cells. Describe the fluid-mosaic model of cell membrane structure o List three major functions of membrane proteins o Transport proteins, receptor proteins, and recognition proteins.
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