1. Why is cellulose so rigid? a) tight packing b) extensive hydrogen bonding c)
ID: 53158 • Letter: 1
Question
1. Why is cellulose so rigid?
a) tight packing
b) extensive hydrogen bonding
c) lack of water interaction
d) all of the above
2. Monosaccharides and polysaccharides can covalently bond to many other biomolecules. How do sugars bond with proteins?
a) N-linkage through asparagine side chain
b) O-linkage through serine side chain
c) all of the above
d) none of the above
3) There are many differences between starch and chitin. Which is NOT a difference?
a) Starch uses an (alpha 1-->4) linkage while chitin uses a (beta 1-->4) linkage
b) Starch is for energy storage while chitin is for structure
c) Starch is made up of glucose monomers while chitin is made up of N-acetyl-glucosamine monomers
d) Starch can be a branched structure while chitin is solely linear
e) Starch contains glycosidic bonds while chitin does not
Explanation / Answer
Answer:
1)b) extensive hydrogen bonding
The cellulose is linked by the beta linkage, it is polysaccharide with glucose as a units. the glucose is attched to the other by Beta glycosidic linkage.
2)c) all of the above
N-linkage through asparagine side chain, O-linkage through serine side chain.
3)b) Starch is for energy storage while chitin is for structure.
rest all are differences
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