Which one of the following statement is not true?

Question

Canvas Classes · Accepted Answer

Evaluating statements about lactose:

(1) Lactose contains -glycosidic linkage between C₁ of galactose and C₄ of glucose — FALSE ✗

The glycosidic linkage in lactose is a -1,4 glycosidic bond (not ). The C1 of -D-galactose is linked to C4 of -D-glucose. This -linkage is why humans cannot digest lactose without the enzyme lactase.

(2) Lactose is a reducing sugar and gives Fehling's test — TRUE ✓

The C1 of the glucose unit in lactose has a free anomeric –OH → reducing sugar → positive Fehling's

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