A carbohydrate made up of two sugar units is a ...

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Multiple Choice

A carbohydrate made up of two sugar units is a ...

Explanation:
The main idea is classification of carbohydrates by how many sugar units they contain. When two sugar units come together, the resulting carbohydrate is a disaccharide. These form through a condensation reaction where a glycosidic bond links the two monosaccharides and water is released. Dissolve it back and you get the two original monosaccharides again via hydrolysis. This distinguishes two-unit sugars from the others: a monosaccharide is just one sugar unit, a polysaccharide is made of many units, and an oligosaccharide is a short chain of a few sugars, not specifically two. Examples of disaccharides include maltose, lactose, and sucrose.

The main idea is classification of carbohydrates by how many sugar units they contain. When two sugar units come together, the resulting carbohydrate is a disaccharide. These form through a condensation reaction where a glycosidic bond links the two monosaccharides and water is released. Dissolve it back and you get the two original monosaccharides again via hydrolysis. This distinguishes two-unit sugars from the others: a monosaccharide is just one sugar unit, a polysaccharide is made of many units, and an oligosaccharide is a short chain of a few sugars, not specifically two. Examples of disaccharides include maltose, lactose, and sucrose.

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