Polysaccharide ​
Tags
Cegep1
Biology
Word count
124 words
Reading time
1 minute
Family of carbohydrate
Polymer of monosaccharides joined by glycosidic linkage
Formed by dehydration
Members ​
Starch ​
1-4 linkage of
Function: carbohydrate storage in plants
Digestible by most animals (possess digestive enzymes that can hydrolyse starch)
Forms:
- Amylose: unbranched
- Amylopectin: somewhat branched
Cellulose ​
1-4 linkage of
Function: reinforces cell walls of plants
Non digestible by most animals (lack enzymes)
Cows have bacteria that can break down cellulose
Unbranched
Glycogen ​
Function: carbohydrate storage in liver and muscle
Branched
Chitin ​
Function: reinforces cell walls of some fungi and the exoskeleton of some animals (e.g. beetles, lobsters, crabs)