BIOCHEM CH 11- Carbohydrates .docx - Chapter 11 Carbohydrates Monosaccharides contain different numbers of carbon atoms and may be aldoses or ketoses

BIOCHEM CH 11- Carbohydrates .docx - Chapter 11...

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Chapter 11: Carbohydrates Monosaccharides contain different numbers of carbon atoms and may be aldoses or ketoses with multiple enantiomeric forms Carbohydrates: a. Carbohydrates are formed from CO 2 and H 2 O b. Roles of Carbohydrates: Energy in diet (main use: breakdown to get ATP/energy) Mediating intercellular communication Structural support (cell walls) Carbohydrates are classified by length a. Monosaccharides=SIMPLE sugars Formula= (CH 2 O) n , where n is greater than or equal to 3 b. Small polymers of sugars can be called: Disaccharides: two sugars bound together Trisaccharides: three sugars bound together Oligosaccharides= several sugars bound together c. Large polymers of sugars=polysaccharides Monosaccharides made from Aldehydes are called ALDOSES a. Aldehydes= Carboxyl group is located on an END CARBON , there is only an H on one side of an Aldose R’-CO-H Glyceraldehyde is the simplest Aldose Monosaccharides made from Ketones are KETOSES a.
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