Polysaccharides

Question 1

amylose

Answer 1

• many condensation reactions
• long, unbranched chain
• coils into helix (compact)
• made of alpha glucose
• 1,4 glycosidic bonds
• hydrogen bonds hold coils together

Question 2

amylopectin

Answer 2

• 1,4 linked alpha glucose molecules
• shorter chains
• branched chain
• 1,6 glycosidic bonds (branched out)

Question 3

glycogen

Answer 3

• glucose storage (animals)
• alpha glucose
• 1,4 glycosidic bonds
• 1,6 bonds (branched out)
• brush like structure

Question 4

cellulose

Answer 4

• structural role
• beta glucose
• alternate molecules rotate 180
• long, straight chains
• hydrogen bonds between lengths
• form strong microfibrils
• several layers increase strength
• fully permeable

Question 5

chitin

Answer 5

-structural polymer
-exoskeleton of insect (waterproof, lightweight, hard)
-amino acids form mucopolysaccharide
-glucosamine units
-long, straight, parallel chains
-alternate molecules rotate 180
hydrogen bonds between chains