Lecture 2 - a. support, storage, transport, cellular...

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Bio 1A Lecture 2 Biological Polymers 1. Sugars Carbs, a. Monosaccharides (CH2O)-carbonyl (aldose, ketose) and # of carbons 2. Fats Lipid a. lipids do not form polymers, hydrophobic b/c consist hydrocarbons (form nonpolar covalent) b. Fats constructed glycerol and fatty acids i. Saturated- no double bonds ii. Unsaturated- cis , trans double bonds c. Phospholipids are two fatty acids, phosphate group attached to glycerol i. fatty acids-hydrophobic but phosphate group-hydrophilic d. steroids-lipids of four fused rings i. cholesterol 3. Amino acids Proteins (consists of polypeptides formed from 20 amino acids)
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Unformatted text preview: a. support, storage, transport, cellular communication, movement, defense b. amino acid- amino and carboxylic groups with R group on the alpha carbon c. 4 levels of protein structure- primary thru quaternary 4. Nucleotides Nucleic acids (polynucleotides) a. store and transmit hereditary info i. DNA and RNA b. nucleotide consist nitrogenous base, pentose sugar, phosphate group 5. DNA Double Helix a. backbones run 5 3 (antiparallel) b. hydrogen bonded: adenine (A) w/ thymine (T) and guanine (G) w/ cytosine (C)...
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