31-71oddsbiochem - 31-71 odds – Josh Peng and extra31 A...

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Unformatted text preview: 31-71 odds – Josh Peng and extra31. A glycosidic bond would be present in :In chemistry, a glycosidic bondis a certain type of functional groupthat joins a carbohydrate(sugar) molecule to another, which may be another carbohydrate. Specifically, a glycosidic bond is formed between the hemiacetalgroup of a saccharide(or a molecule derived from a saccharide) and the hydroxyl groupof some organic compound such as an alcohol. A substance containing a glycosidic bond is a glycoside32. Fatty acids are all except:A fatty acid is composed of a long hydrocarbon chain (“tail”) and a terminal carboxyl group (or “head”). -saturated or unsaturated (usually cis double bonds to make a “kink”)-saturated can pack closely-carboxyl group normally ionized under physiological conditions-typically esterfied to glycerol or other backbone structures-even number of carbon atoms-occur in large amounts in biological systems, but only rarely in the free uncomplexed state33. Lipids are the biomolecules of choice for storage of metabolic energy because they: are rich in reduced carbons and thus yield large amounts of energy in the oxidative reactions of metabolism.34. Body fat is a major storage form of energy because it:-yields large amount of energy in oxidative reactions of metabolism b/c of reduced carbons-hydrophobic nature allows them to aggregate in highly anhydrous forms-body fat provides good insulation35. Membranes with unsaturated fatty acids in their components are more flexible and fluid because:Because they do not have double bonds, which cause kinks and therefore cannot pack closely together.36. Certain phospholipids, including _____ and ________ participate in complex cellular signaling events.Phosphatidylinositol and phophatidylcholine....
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This note was uploaded on 04/14/2008 for the course CHEM 4370 taught by Professor Lubchenko during the Spring '08 term at University of Houston.

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31-71oddsbiochem - 31-71 odds – Josh Peng and extra31 A...

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