Page 2 Flashcards
What type of 3D structure does cellulose form?
A: Cellulose forms an extensive three-dimensional network held together by hydrogen bonds.
What type of 3D structure does starch form?
A: Starch forms a polymer composed of chains that wind into a helix.
What is the primary force that stabilizes the 3D structure of cellulose?
A: Hydrogen bonds between adjacent glucose chains.
Why is cellulose rigid while starch is flexible?
A: Cellulose’s linear structure and extensive hydrogen bonding make it rigid, while starch’s helical structure allows flexibility.
How do the 3D structures of cellulose and starch reflect their glycosidic bond orientations?
A: The β(1→4) bonds in cellulose create a straight, rigid chain, while the α(1→4) bonds in starch allow coiling into a helix.
