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प्रश्न
What are monosaccharides?
उत्तर १
Monosaccharides: A carbohydrate that cannot be hydrolysed further to give simpler units of polyhydroxy aldehyde or polyhydroxy ketone is called a monosaccharide.
eg. Glucose, fructose, ribose, etc.
उत्तर २
Monosaccharides are carbohydrates that cannot be hydrolysed further to give simpler units of polyhydroxy aldehyde or ketone.
Monosaccharides are classified on the bases of number of carbon atoms and the functional group present in them. Monosaccharides containing an aldehyde group are known as aldoses and those containing a keto group are known as ketoses. Monosaccharides are further classified as trioses, tetroses, pentoses, hexoses, and heptoses according to the number of carbon atoms they contain. For example, a ketose containing 3 carbon atoms is called ketotriose and an aldose containing 3 carbon atoms is called aldotriose.
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संबंधित प्रश्न
Draw ring structure of α - D - (+) - glucopyranose.
Write the name of two monosaccharides obtained on hydrolysis of lactose sugar.
Write the product obtained when D-glucose reacts with H2N − OH.
How do you explain the absence of aldehyde group in the pentaacetate of D-glucose?
Which one of the following is a monosaccharide:
starch, maltose, fructose, cellulose
The letters ‘D’ or ‘L’ before the name of a stereoisomer of a compound indicate the correlation of configuration of that particular stereoisomer. This refers to their relation with one of the isomers of glyceraldehyde. Predict whether the following compound has ‘D’ or ‘L’ configuration.
Assertion: All naturally occurring α-aminoacids except glycine are optically active.
Reason: Most naturally occurring amino acids have L-configuration.
Naturally occurring glucose is called as ______.
