carbohydrates

carbohydrates - Chapter 13 Carbohydrates 1. Carbohydrates-...

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Chapter 13 Carbohydrates 1. Carbohydrates- are made up of linked sugars. Digestion breaks the bonds to give mono-saccharides Mainly- glucose for animals, also sucrose- table sugar, lactose- milk cellulose in plants Glucose is formed by photosynthesis Photosynthesis 6CO 2 + 6H 2 O + energy —> C 6 H 12 O 6 + 6O 2 Respiration 2. Monosaccharies- 1 sugar disaccharides- 2 sugars Polysaccharies- thousands of sugars Digestion are rxn with water gives monosaccharides- 3. Monosaccharides- 3-8 carbons, one carbonyl the rest hydroxyl groups carbonyl on carbon 1- aldose carbon 2 -ketose
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CHO OH H OH H OH H OH H CH 2 OH D-allose (aldohexose) H CHO OH OH H OH H CH 2 OH Ribose (aldopentose) CH 2 OH O H HO OH H OH H CH 2 OH Fructose (ketohexose) Name according to number of carbons and functional group. 4. A. Stereoisomers- same molecular, same atom-atom connectivity, but differemnt arrangement in space. Type of stereoisomers- cis- trans- and chiral.
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carbohydrates - Chapter 13 Carbohydrates 1. Carbohydrates-...

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