Flashcards in 2.5.4 Polysaccharides: Structural Molecules Deck (10)
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1
Q
cellulose
A
- a polysaccharide found in the cell walls of plant cells. -
Cellulose is a polymer of glucose molecules connected by 1-4 glycosidic linkages
2
Q
note
A
- Several other structural polysaccharides include hemicellulose, pectin, and chitin
3
Q
Hemicellulose and pectin
A
- polysaccharides that act like glue to hold the cellulose together in cell walls.
4
Q
chitin
A
- a polysaccharide that makes up the exoskeleton of arthropods and is in the cell walls of fungi. A hard exoskeleton is produced when calcium is added to it
5
Q
Mucopolysaccharides
A
- found in the fluid of the eyeball, joint lubricants, umbilical cords, and connective tissues of the skin.
6
Q
Carbohydrates serve two major purposes. These purposes are
A
- energy and structure
7
Q
True or false?
Cellulose is composed of a chain of beta glucose molecules, and starch is composed of a chain of alpha-glucose molecules.
A
- true
8
Q
Which type of carbohydrate is found in plant cell walls and is responsible in part for the strength of these walls?
A
- cellulose
9
Q
Chitin is a structural carbohydrate found in
A
- arthropods and fungi
10
Q
Mammals lack cellulases and cannot digest cellulose without the help of symbiotic bacteria that produce cellulase for them. Why can’t amylase, an enzyme that digests starch, effectively digest cellulose?
A
- The shape of the cellulose makes it less accessible to digestive enzymes