Give an example of a synthetic polyester and of a synthetic polyamide.
Polyesters and polyamides are produced by condensation reactions. Name a molecule that is usually removed in these reactions.
The table gives the repeat units of several polymers. Put a tick (✓) beside those that are biodegradable.
Draw the structures of two monomers that are used to make polymer B.
After a section of polypeptide was hydrolysed, the amino acids identified were: T: $\text{CH}_3\text{CH(NH}_2\text{)CO}_2\text{H}$, U: $\text{C}_6\text{H}_5\text{CH}_2\text{CH(NH}_2\text{)CO}_2\text{H}$, V: $\text{H}_2\text{N(CH}_2)_4\text{CH(NH}_2\text{)CO}_2\text{H}$. Which of the amino acids T, U or V has the highest pH in aqueous solution? Explain why.
State how many different dipeptides could be formed from a reaction mixture containing amino acids T and U.
Polypeptides have a high proportion of carbon and hydrogen in their structures, yet many dissolve in water. By referring to polypeptide structure, explain why.