Poly(ethene) is produced by .....1..... polymerisation of ethene. Nylon and $\text{Terylene}$ are both made by .....2..... polymerisation. Proteins have the same .....3..... linkage as nylon. Fats have the same .....4..... linkage as $\text{Terylene}$. When proteins are hydrolysed, they produce .....5..... . Which words complete gaps 1-5 correctly?