Multiple Choice
Which chemical group below indicates that the sugar is a reducing disaccharide? Is 'C' an acetal or ketal?
Table of contents
- 1. Introduction to Biochemistry4h 34m
- What is Biochemistry?5m
- Characteristics of Life12m
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- Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m
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- Practice: Amino Acid Oxidation 12m
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- Practice: Oxidative Phosphorylation 15m
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- Practice: Oxidative Phosphorylation 35m
- Practice: Photophosphorylation 15m
- Practice: Photophosphorylation 21m
9. Carbohydrates
Reducing Sugars
Struggling with Biochemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following disaccharides are reducing sugars?
A
Sugars A & B.
B
Sugars B & C.
C
Sugars C & D.
D
Sugars A & C.
E
>2 sugars.
Verified step by step guidance1
Identify the anomeric carbon in each sugar unit of the disaccharides. The anomeric carbon is the carbon that was the carbonyl carbon (C=O) in the open-chain form of the sugar.
Determine if the anomeric carbon is involved in the glycosidic bond. If the anomeric carbon is not involved in the glycosidic bond, the sugar is a reducing sugar.
For Sugar A, observe that the anomeric carbon of the second sugar unit is not involved in the glycosidic bond, indicating it is a reducing sugar.
For Sugar B, both anomeric carbons are involved in the glycosidic bond, indicating it is a non-reducing sugar.
For Sugar C, the anomeric carbon of the first sugar unit is not involved in the glycosidic bond, indicating it is a reducing sugar.
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Related Practice
Reducing Sugars practice set
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