1.4 Carbohydrate: Polysaccharides Flashcards
The different types of polysaccharides: starch, glycogen, and cellulose How their structures relate to their functions
What are polysaccharides?
Complex carbohydrates made of many monosaccharides
What are examples of polysaccharides?
Starch
What is starch?
A polysaccharide used by plants to store glucose
What monosaccharide makes up starch?
Alpha-glucose
What types of glycosidic bonds are in starch?
1-4 and 1-6
What are the two forms of starch chains?
Unbranched and branched
Why is starch a good energy store?
Insoluble
What is glycogen?
A polysaccharide used by animals to store glucose
What monosaccharide makes up glycogen?
Alpha-glucose
What types of glycosidic bonds are in glycogen?
1-4 and 1-6
Why is glycogen a good energy store?
Insoluble
What is cellulose?
A polysaccharide that provides structural support in plant cell walls
What monosaccharide makes up cellulose?
Beta-glucose
How are beta-glucose molecules arranged in cellulose?
Every other molecule is inverted
What type of bonds link cellulose chains?
Hydrogen bonds
What are microfibrils?
Bundles of cellulose chains
What are macrofibrils?
Bundles of microfibrils
How is cellulose adapted for its role?
Long straight unbranched chains
What is the source of cellulose?
Plant cell walls
What is the source of starch?
Plant starch grains
What is the source of glycogen?
Animal liver and muscle
What is the monomer of cellulose?
Beta-glucose
What is the monomer of starch?
Alpha-glucose
What is the monomer of glycogen?
Alpha-glucose