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I need help in this question.thanks if you help me!!
=)

2006-10-26 12:38:46 · 1 answers · asked by Anonymous in Education & Reference Homework Help

1 answers

lucky for you I'm in a college biochemistry class right now.

Monosaccharides are the simplest form of carbohydrates. They consist of one sugar and are usually colorless, water-soluble, crystalline solids. Some monosaccharides have a sweet taste. Examples of monosaccharides include glucose (dextrose), fructose, galactose, and ribose.

A disaccharide is a sugar (a carbohydrate) composed of two monosaccharides. The two monosaccharides are bonded via a condensation reaction that leads to the loss of a molecule of water. The glycosidic bond can be formed between any hydroxyl group on the component monosaccharide. So, even if both component sugars are the same (e.g., glucose), different bond combinations (regiochemistry) and stereochemistry (alpha- or beta-) result in disaccharides that are diastereoisomers with different chemical and physical properties.

Depending on the monosaccharide constituents, disaccharides are sometimes crystalline, sometimes water-soluble, and sometimes sweet-tasting.

Disaccharide examples:
sucrose (glucose + fructose)
lactose (glucose + galactose)
maltose (glucose + glucose)

hope this helps!

2006-10-26 12:49:03 · answer #1 · answered by davidalden98 3 · 0 0

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