_ are specific structures related to monosaccharides:
Correct answer: B. Keto group
- A. Glycosidic bond
- B. Keto group
- C. Maltose
- D. Fructose
Explanation
The correct answer is the keto group. A keto group is a defining structural feature of ketose sugars, which are a type of monosaccharide. Monosaccharides like fructose contain a keto group, which is a carbonyl group bonded to two carbon atoms. Other options are incorrect because a glycosidic bond is a linkage between sugar molecules, maltose is a disaccharide, and fructose is an example of a monosaccharide rather than a structural feature.
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