Cholesterol has a fused four – ring core and is part of body membranes. The      -OH group on C-3 is the polar head, and the rest of the molecule provides the hydrophobic tail that does not fit into the zigzag packing of the hydrocarbon portion of the saturated fatty acids. Considering this structure, tell whether cholesterol contributes to the stiffening (rigidity) or the fluidity of a membrane.

Q: In aqueous solutions, fatty acids associate with each other in spherical clusters called:

A: 2. Option A

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Q: Describe the biological significance of cholesterol.

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Q: Draw the structure of the following fatty acids: (a) Stearic acid (b) Arachidonic acid

A:

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Q: The main difference between a glycerophospholipid and a sphingophospholipid is which

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Q: Why are fatty acids generally composed of an even number of carbons?

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Q: Lipid bilayers are said to behave like two-dimensional fluids. What does this mean?

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Q: What are the typical fatty acid chains found in phosphoglycerides, and why do their carbon atom…

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Q: The molecular structure shown here represents which lipid component? monounsaturated fatty acid…

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Q: [Select] [Select] [Select] non-saponifiable saponifiable НО ОН

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