question_answer

\[\alpha \]-maltose consists of

A)  one a-D-glucopyranose unit and one p-D-glucopyranose unit with 1-2 glycosidic linkage

B)  two a-D-glucopyranose units with 1-2 glycosidic linkage

C)  two P-D-glucopyranose units with 1-4 glycosidic linkage

D)  two a-D-glucopyranose units with 1-4 glycosidic linkage

Correct Answer: D

Solution :

In maltose 1st carbon atom of one \[\alpha -D-\] glucopyranose unit is linked to 4th carbon atom of adjacent \[\alpha -D\] glucopyranose unit through glycosidic linkage.