Carbohydrates Part 1

The general formula of monosaccharides is

• CnH2nOn

• C2nH2On

• CnH2O2n

• CnH2nO2n

The most important epimer of glucose is

• Galactose

• Fructose

• Arabinose

• Xylose

The sugar found in DNA is

• Xylose

• Ribose

• Deoxyribose

• Ribulose

A pentose sugar is

• Dihydroxyacetone

• Ribulose

• Erythrose

• Glucose

 The aldose sugar is

• Glycerose

• Ribulose

• Erythrulose

• Dihydoxyacetone

A sugar alcohol is

• Mannitol

• Trehalose

• Xylulose

• Rabinose

Two sugars which differ from one another only in configuration around a single carbon atom are termed

• Epimers

• Anomers

• Optical isomers

• Stereoisomers

Compounds having the same structural formula but differing in spatial configuration are known as

• Stereoisomers

• Anomers

• Optical isomers

• Epimers

A triose sugar is

• Glycerose

• Ribose

• Erythrose

• Fructose

• Optical isomerism

• Mutarotation

• Epimerisation

• D and L isomerism

The number of isomers of glucose is

• 2

• 4

• 8

• 16

In glucose the orientation of the —H and —OH groups around the carbon atom 5 adjacent to the terminal primary alcohol carbon determines

• D or L series

• Dextro or levorotatory

• α and β anomers

• Epimers

 α-D-glucose and β -D-glucose are

• Stereoisomers

• Epimers

• Anomers

• Keto-aldo pairs

 The general formula of polysaccharides is

• (C6H10O5)n

• (C6H12O5)n

• (C6H10O6)n

• (C6H10O6)n

 The pentose sugar present mainly in the heart muscle is

• Lyxose

• Ribose

• Arabinose

• Xylose

Isomers differing as a result of variations in configuration of the —OH and —H on carbon atoms 2, 3 and 4 of glucose are known as

• Epimers

• Anomers

• Optical isomers

• Steroisomers

 The carbohydrate of the blood group substances is

• Sucrose

• Fucose

• Arabinose

• Maltose

The major sugar of insect hemolymph is

• Glycogen

• Pectin

• Trehalose

• Sucrose

Erythromycin contains

• Dimethyl amino sugar

• Trimethyl amino sugar

• Sterol and sugar

• Glycerol and sugar