Questions
2025 T3 DP DPST1051 BLSC1342 Molecules, Cells and Genes
Single choice
Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified?
Options
A.As a pentose
B.As a hexose
C.As a polysaccharide
D.As a disaccharide
E.As a monomer
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Step-by-Step Analysis
First, the question describes lactose as a sugar in milk composed of one glucose molecule linked glycosidically to one galactose molecule, and asks how lactose is classified.
Option 1: 'As a pentose' — This is incorrect because a pentose is a five-carbon sugar. Lactose contains six carbons in total (glucose and galact......Login to view full explanationLog in for full answers
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