BIOL 110 Study Guide - Final Guide: Dna Ligase, Lysine, Neuraminidase Inhibitor
25 Nov 2015
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Document Summary
What makes something essential: the body cannot manufacture it, required for normal body function, and lack of it will result in deficiency symptoms, must be supplied in the diet. Collagen: holds everything together, most abundant protein (29 types), ages as we get older causing wrinkles. The r groups create a triple helix that has tensile strength and elasticity. Ehlers-danlos syndrome: mostly autosomal dominant, collagen is overly stretchy, variable expressivity. A mutation is a change in the nucleotide sequence from the wild type sequence. Mutations can be deleterious, neutral, or advantageous. Viruses: high mutation rates, they are resistant to tamiflu (a neuraminidase inhibitor, neuraminidase allows the virus to get into the host cell and replicate), explains why hiv is so difficult to treat. Chemicals causing embryo mutations are called teratogens. Nitrosamines: considered as carcinogens, sodium and nitrate found in foods can convert to nitrosamines in the stomach due to high heat frying.
