BISC207 Lecture Notes - Lecture 3: Ribose, Ketose, Carboxylic Acid
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BISC207 Full Course Notes
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Four major types of organic molecules: proteins, nucleic acids, carbohydrates, lipids. Dna and rna are polymers made from nucleotides. Has a phosphate group (at least 1, up to 3), central sugar, n base (single or double ring of c and n) Carbons in the sugar are numbered with prime and in clockwise. Cytosine, thymine (dna only), uracil (rna only) Dna nucleotides are missing an o at the 2" c (fig 4. 1b) Dna, d stands for deoxyribose; deoxy means less oxygen. Covalently bond 2 nucleotides together w a dehydration reaction (remove a water) All sugars in a strand have same orientation. Dna: the bases of 2 antiparallel (opposite direction) strands h bond to form double helix. Dna: information storage w access for product generation. Rna: the bases of a single strand h bond with each other to form a hairpin structure. Rna: many types w different functions, including structural , information, and enzymatic.