**Question:**Out of starch, glycogen, cellulose, and chitin, carbohydrate polymers with beta linkages are:- ○ Cellulose and Starch- ○ Cellulose and Chitin- ○ Glycogen and Starch- ○ Glycogen and Chitin**Explanation:**This multiple-choice question aims to assess the knowledge of carbohydrate polymers, specifically focusing on identifying which among the given options have beta linkages. Starch and glycogen primarily consist of alpha linkages, while cellulose and chitin are known for having beta linkages, which have significant effects on their structural properties.

Answered: Out of starch, glycogen, cellulose and…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Step 1: Alpha and Beta linkages

The alpha and beta linkages are types of glycosidic linkages which are formed between the hemiacetal and hemiketal group of a saccharide (or a compound which is derived from saccharide) and hydroxyl group like alcohol group of another compound.
We can differentiate alpha glycosidic linkage and beta glycosidic by the relative stereochemistry of the anomeric position and the stereo-center that is farthest from the first carbon.

An alpha glycosidic linkage is formed between the carbons with the same stereochemistry.

A beta glycosidic linkage is formed between the carbons having different stereochemistry.