BIOL 1000 Lecture Notes - Lecture 7: Polynucleotide, Glycerol, Uracil
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Fatty acid = consists of a carboxyl group (gives the name acid), and a hydrocarbon chain 16- 18 atoms long: nonpolar hydrocarbon chain is the reason fats are hydrophobic. 3 glycerol molecules linked to 1 fatty acid via dehydration results in 1 fat molecule. Saturated fatty acids = fatty acids with no double bonds in the hydrocarbon chain (have the maximum number of hydrogen atoms) . Most animal fats are saturated: solid at room temperature lomoar cpsd| 987298. All genetic information is written as a 4 letter alphabet. Rna contains adenine, guanine, cytosine, and uracil (instead of thymine) . Includes a repeating sugar-phosphate backbone (bases are not part of backbone) Dna is a double helix = 2 polynucleotides wrapped around each other . Nitrogenous bases protrude from the 2 sugar-phosphate backbones, & pair in the centre. A always pairs with t, c always pairs with g. Bonds are weak on their own, but collectively they zip the 2 strands together.