Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425



Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem

. Although both starch and cellulose are polymers of glucose, starch is digestible by humans and cellulose is not. Flow do the structures of these polysaccharides differ, resulting in their different digestibility?

Interpretation Introduction


To explain the difference in structures of cellulose and starch and their different digestibility.

Concept Introduction:

Starch and cellulose are the made of the number of glucose units joined to each other in a series. Starch consists of two polymers such as amylose and amylopectin.

Amylose is polymer made of linear chain glucose while amylopectin is polymer made of branched chain polymers.

Cellulose consists of monomer beta D- glucose cross linked to each other while starch can be straight or branched.


Cellulose is a complex structure in which number of glucose units linked to each other through glycosidic linkage which is quite complex to break down into simpler glucose molecule in comparison to starch consisting of simple glucose molecule get easily digestible by amylase.

Starch is present in leaves helps in producing carbohydrates through photosynthesis.

Cellulose is present in cell wall of plants to provide it with protection and give it a proper structure...

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