MEDIUM
AS and A Level
IMPORTANT
Earn 100

Draw a diagram of two molecules of serine to show the formation of hydrogen bonds between the -OH groups of the side-chain.

Important Questions on Polymerisation

EASY
AS and A Level
IMPORTANT
Which one of the following shows the structural formula of the amide (or peptide) bond that links amino acid monomers together in a polypeptide or a protein? 
-CONH-
B -CONH2-
C -COONH- 
D -COONH2-
 
EASY
AS and A Level
IMPORTANT
State what is meant by the term amino acid residue.
MEDIUM
AS and A Level
IMPORTANT
Explain how the chains of Kevlar are held together to make it such a strong material. 
MEDIUM
AS and A Level
IMPORTANT

Polyesters are condensation polymers. 
a. Give the structures of two monomers that could be used to make a polyester. 

b. Give the structure of the polyester formed from these two monomers. 

EASY
AS and A Level
IMPORTANT
Glycine is an amino acid with the formula H2NCH2COOH. Give the systematic name for glycine.