Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
D-glucose, D-galactose and D-fructose are all (1) isomers (2) epimers (3) monosaccharides (4) aldohexosesA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: D
Solution :
D-glucose, D-galactose and D-fructose are add monosaccharides and isomers of glucose \[\text{C}{{ & }_{6}}{{\text{H}}_{\text{12}}}{{\text{O}}_{\text{6}\text{.}}}\]Monosaccharides or simple sugars, can contain as few as three carbon atoms and often are used as building blocks to form larger molecules. The six carbon sugar glucose is a component of large energy storage molecules. A structural isomers of glucose such as fructosehas identical chemical group bonded to different carbon atoms while a stereoisomers of glucose such as galactose has identical chemical groups bonded to the same carbon atom but in different orientations.
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