Cameroon GCE A-Level Food Science & Nutrition Practice Questions - Cameroon General Certificate Of Education Advanced Level Food Science And Nutrition (Subject Code 0740) Exam

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D-glucose and D-galactose are essential hexose monosaccharides utilized in human metabolism. Structurally, how are these two aldohexoses related to each other?

They are structural constitutional isomers with different carbonyl functional groups. They are diastereomeric epimers that differ in configuration specifically at carbon-4 (C-4). They are non-superimposable mirror-image enantiomers of the same molecular formula. They are anomers differing exclusively in the orientation of the hemiacetal hydroxyl group at carbon-1.

Correct Answer:

They are diastereomeric epimers that differ in configuration specifically at carbon-4 (C-4).

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