객관식
Which of the following disaccharides are reducing sugars?
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9. Carbohydrates
Reducing Sugars
객관식
Which of the molecules below have a reducing end?
A
Molecule 1.
B
Molecule 2.
C
Molecule 3.
D
Both Molecules 2 and 3.
E
Molecules 1, 2, and 3.
검증된 단계별 안내1
Understand the concept of a reducing end: In carbohydrates, a reducing end is the end of the molecule that has a free anomeric carbon, which is capable of acting as a reducing agent.
Examine Molecule 1: This molecule is a disaccharide with both anomeric carbons involved in the glycosidic bond, meaning it does not have a free anomeric carbon and thus no reducing end.
Examine Molecule 2: This molecule is a disaccharide where one of the anomeric carbons is free (not involved in the glycosidic bond), indicating the presence of a reducing end.
Examine Molecule 3: This molecule is also a disaccharide with one free anomeric carbon, suggesting it has a reducing end.
Conclude that Molecules 2 and 3 have reducing ends because they each have a free anomeric carbon, while Molecule 1 does not.
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