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
Write an equation to represent the polymerisation of ethene, H2C=CH2.
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-
 
MEDIUM
AS and A Level
IMPORTANT
3-Hydroxypropanoic acid is capable of forming polymers. Give the structure of 3-hydroxypropanoic acid.