Which of the following statements is false? (a) D-glucose units of amylose are linkedthrough alpha (14) linkage (b) D-glucose and D-galactose are epimers (c)enzymatic degradation of starch by -amylase breaks down starch initially intodextrins (d) lactose is a reducing sugar
Question
Which of the following statements is false? (a) D-glucose units of amylose are linkedthrough alpha (14) linkage (b) D-glucose and D-galactose are epimers (c)enzymatic degradation of starch by -amylase breaks down starch initially intodextrins (d) lactose is a reducing sugar
Solution
The false statement is (b) D-glucose and D-galactose are epimers.
Epimers are diastereomers that differ in configuration at only one stereogenic center. D-glucose and D-galactose are not epimers. They differ in configuration at the C4 position. The correct epimer of D-glucose would be D-mannose, which differs at the C2 position.
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