Chapter_05_The_Structure_and_Function_of_Macromolecules

Chapter_05_The_Structure_and_Function_of_Macromolecules -...

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Phospholipids Phospholipids have only two fatty acids attached to the glycerol. They have hydrophobic tails and hydrophilic heads. Which create bilayers when added to water. Phospholipids are major components of all cell membranes. Fats Fat is constructed out of glycerol and three fatty acids linked by ester linkages. Saturated fatty acids in which there are no double bonds between carbon atoms in the chain. Unsaturated fatty acids have at least one double bond in the chain. Polymer Principle Carbohydrates, proteins, nucleic acids are polymers. A polymer is a long molecule consisting of many identical building blocks, monomers, linked by covalent bonds. The monomers are linked together due to dehydration, in which each loses a water molecule in order to create a covalent bond. They are disassembled by hydrolysis. Polysaccharides Starch is a storage polysaccharide of plants consisting entirely of glucose monomers. Plants store it as granules within plastids. The polysaccharide in animals is glycogen, which is more extensively branched than starch. It is stored in mainly liver and muscle cells. Cellulose is part
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This note was uploaded on 04/01/2012 for the course BIO 141 taught by Professor Dr.cafferty during the Spring '11 term at Emory.

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Chapter_05_The_Structure_and_Function_of_Macromolecules -...

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