Carbohydrates simple sugars are monosaccharides which can be...

Carbohydrates. Simple sugars are monosaccharides, which can be classified into different types depending on the number of carbons, and whether they have aldehydes or ketones. A) What type of sugar is D-glucose? _____________________ B) What type of sugar is D-fructose? ____________________ C) Draw the structure of D-glucose as a Fisher projection. Number the carbon atoms

Carbohydrates are classified as monosaccharides, oligosaccharides and polysaccharides depending on their behaviour towards hydrolysis. All monosaccharides containing five or six carbon atoms can have two cyclic structures namely furanose and pyranose form. Oligosaccharides are further classified as di, tri, tetra etc saccharides depeding upon the number of monosaccharide units actually obntained on hyrolysis. In oligosaccharides and polysaccharides, the different monomer units are joined together by glycosidic linkages. The wrong statement relating to carbohydrates is (a) Monosaccharides, whether aldose or ketose, are reducing sugars. (b) Most naturally occurring monosaccharides are pentoses or hexoses. (c) Most disaccharides are reducing sugars, only exception is sucrose which is non reducing. (d)

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