BIOCHM 1090 Lecture Notes - Lecture 24: Ketone, Glyceraldehyde, Anomer
Document Summary
Info: carbohydrates: a large class of naturally occurring polyhydroxy aldehydes and ketones, monosaccharides: 3-7 c atoms, oligosaccharides: 10-20 monosaccharides, polysaccharides: usually hundreds of monosaccharides. Monosaccharides: simple sugars that have from three to seven carbon atoms, and one aldehyde or one ketone group. 1. if the sugar has an aldehyde group, it is an aldose. 2. if it has a ketone group, the sugar is classi ed as a ketone. B. the aldehyde group is always at the end of the carbon chain, and the ketone group is always on the second carbon of the chain. 1. they form disaccharides and polysaccharides which are polymers of monosaccharides. 2. functional groups are involved in reactions with alcohols, lipids, or proteins to form biomolecules. Handedness of carbs: glyceraldehyde, an aldotriose and the simplest naturally occurring carb, is chiral, chiral compounds lack a plane of symmetry and exist as a pair of enantiomers in either a.
