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What are monosaccharides ?


Monosaccharides are simple sugars with only one sachharide unit. These cannot be hydrolysed into simpler forms. A monosaccharide containing an aldehydic group (–CHO) in its molecule is called aldose. The glucose and galactose are aldoses. A monosaccharide which contains a keto group (> C = O) in its molecule is called ketose. Fructose is a ketose. 
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Give the names of two vitamin nucleotides.

Nicotinamide and riboflavin are examples of vitamin nucleotides
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What is glycosidic bond ?

Glycosidic bond is the bond that joins the monosaccharide units in a polysaccharide chain. the bond is formed between two adjacent monosaccharide units and it involves dehydration. 
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Give the names of two trace elements.

Silicon and selenium are examples of trace elements.
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What are the different types of carbohydrates ?

Carbohydrates are classified into three broad categories- monosaccharides, disaccharides and polysaccharides on the basis of complexity of their structures and number of saccharide units.
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