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Chapter 7: Problem 1

. What type of linkage is known as glycosidic linkage?

Short Answer

Expert verified
Answer: A glycosidic linkage is the covalent bond that joins a carbohydrate molecule to another molecule, typically formed between two monosaccharide molecules through a dehydration synthesis reaction. Examples of alpha-linked carbohydrates include maltose and starch, while examples of beta-linked carbohydrates include cellulose and lactose.

Step by step solution

01

Definition of Glycosidic Linkage

Glycosidic linkage is the covalent bond that joins a carbohydrate molecule to another molecule. It can be between two carbohydrate molecules or between a carbohydrate and a non-carbohydrate molecule.
02

Type of Glycosidic Linkage

The type of linkage known as glycosidic linkage is formed between two monosaccharide molecules. This linkage is created when a hydroxyl group (-OH) of one monosaccharide reacts with the hydroxyl group (-OH) of another monosaccharide, releasing a water molecule (H₂O) in the process. This reaction is called a dehydration synthesis or condensation reaction.
03

Examples of Glycosidic Linkages

There are two common types of glycosidic linkages: alpha (α) and beta (β) linkages. Alpha linkage occurs when the hydroxyl group on the anomeric carbon of one monosaccharide molecule points downwards and forms a bond with another hydroxyl group. Examples of alpha-linked carbohydrates include maltose and starch. Beta linkage occurs when the hydroxyl group on the anomeric carbon of one monosaccharide molecule points upwards and forms a bond with another hydroxyl group. Examples of beta-linked carbohydrates include cellulose and lactose.

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Most popular questions from this chapter

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