MICB 201 Lecture Notes - Lecture 15: Electron Acceptor, Ribose, Deoxyribose
Document Summary
Organic (chx: possess c and have at least one c-h, n-h or s-h bond, many different types of organic chemicals most are composed of several major bioelements. Inorganic: lack c or if have c, lack c-h, n-h or s-h bonds, many different types of inorganic chemicals. Nutritional diversity: different organisms use different nutrients to satisfy their nutritional requirements. Major bioelements: c, n, p, s, o, h, required to build organic cellular molecules. eg. protein, dna, rna, lipid, polysaccharide etc, nutritional sources of major bioelements: varies with organism. Special case: vitamins: small organic molecules: composed of the major bioelements, examples: riboflavin, thiamine, niacin, some are components of some enzyme active sites (e. g. thiamine, some carry electrons (e. g. niacin (nad), riboflavin (fad)) Nutrients as sources of electrons: electrons are required to reduce atoms in biosynthetic (anabolic) e-catalyzed reactions, example: synthesizing deoxyribose from ribose, nutritional sources of electrons: varies with organism. Nadph: electrons are donated by cellular electron carrier: nadph.
