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Sucrose, ordinary table sugar, is a disaccharide assembled from:
AGlucose and galactose
BFructose and galactose
CRibose and deoxyribose
DGlucose and fructose
Answer & Solution
Correct answer: D. Glucose and fructose
1. A disaccharide is two monosaccharides joined by a glycosidic bond.
2. Sucrose is the most common disaccharide.
3. Its two monomers are glucose and fructose.
4. Glucose with galactose gives lactose instead, and ribose and deoxyribose are nucleic acid sugars.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 3 'Biological Macromolecules', sections 3.1-3.5_
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