A laboratory separates three natural polymer samples into their monomers.
| Sample | Information about the sample | Information about its monomers |
|---|---|---|
| K | It stores energy in a cereal seed. | It contains one type of monomer. |
| L | It speeds up a reaction in saliva. | It contains about 20 different types of monomer. |
| M | It carries genetic code in yeast cells. | It contains four monomer types, labelled A, T, C and G. |
State the natural polymer in each sample and the type of monomer from which it is made.
A second sample contains the same numbers of each type of monomer as sample L, but the monomers are joined in a different order.
Explain why the second sample may have a different job from sample L.
131 exam-style questions on OCR GCSE Chemistry 6.2 Organic chemistry, covering 6.2.1 Crude oil and fractional distillation, 6.2.2 Cracking and dependence on hydrocarbons, 6.2.3 Functional groups and homologous series, 6.2.4 Reactions of alkanes, alkenes and alcohols, 6.2.5 Addition polymerisation and repeat units, 6.2.6 Naturally occurring polymers, 6.2.7 Chemical cells and fuel cells, and 6.2.8 Condensation polymerisation and how to make one. Each one has a worked solution and a mark scheme showing where the marks go.