2.1.2: Polysaccharides

Question 1

What type of bonds join a-glucose monomers in starch?

Answer 1

1,4 and 1,6 - glycosidic bonds

The numbers refer to the carbon atoms between which the bonds form.

Question 2

What is the structure of starch primarily composed of?

Answer 2

a-glucose

Starch is a polymer made from a-glucose monomers.

Question 3

What is Amylose?

Answer 3

A structure in starch where glucose monomers are joined by 1,4 - glycosidic bonds

This results in a spiral-shaped polymer.

Question 4

What is the structural difference between Amylose and Amylopectin?

Answer 4

Amylose has only 1,4 - glycosidic bonds; Amylopectin has both 1,4 and 1,6 - glycosidic bonds

The 1,6-glycosidic bonds in Amylopectin create branches.

Question 5

Fill in the blank: Starch is a polymer made up of _______.

Answer 5

a-glucose

Question 6

True or False: Amylopectin is a linear structure.

Answer 6

False

Amylopectin has branches due to 1,6-glycosidic bonds.

Question 7

Define glycosidic bonds.

Answer 7

Covalent bonds that join monosaccharides

They are formed through condensation reactions.

Question 8

What results from the combination of 1,4 and 1,6 - glycosidic bonds in starch?

Answer 8

Branches in the polymer structure

This is characteristic of Amylopectin.