Phospholipids - Phospholipids = Glycerol + 2 fatty acids +...

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Phospholipids = Glycerol + 2 fatty acids + 1 polar (phosphate-containing) head group (instead of third fatty acid in triglyceride) - allows molecules to have hydrophobic end (2 fatty acids) and hydrophilic (phosphate) end - these molecules are the subunits of biological membranes in cells (e.g.: plasma membrane): the polar head group is in contact with water on the inside and outside of the cell, and the hydrophobic fatty acid chains are buried in the center of the membrane Steroids are composed of 4 fused carbon rings plus some variable functional side group - Cholesterol is a structural component of the plasma membrane in animals, and is used in the synthesis of vitamin D and bile salts - Cholesterol is a precursor form of steroid that is modified to produce several other types of steroids - Steroids function as hormones in animal cells - Accumulation of large amounts of these bulky molecules in animals can lead to reduced blood flow and hypertension (high blood pressure) Proteins: Proteins
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Phospholipids - Phospholipids = Glycerol + 2 fatty acids +...

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