B4

Question 1

Cellulose/starch

Answer 1

Cellulose:
Unbranched chain with beta 1,4- glycosidic linkage
(Packed up together) there are multiple hydrogen bonds between chains
Insoluble
Strong, fibrous
Starch:
(Amylose and amylopectin ((branched)))
Alpha 1,4 and 1,6 glycosidic linkage
Soluble in water
Not strong nor fibrous

Question 2

What Haworth projections allow?

Answer 2

• 3D perspective of structures
• shows cis/trans arrangement of groups