Which statement correctly describes three naturally occurring polymers?
Proteins from amino acids; starch from sugars; DNA from four different nucleotides
Proteins from sugars; starch from amino acids; DNA from four different nucleotides
Proteins from amino acids; starch from sugars; DNA from two different nucleotides
Proteins from amino acids; starch from nucleotides; DNA from four different sugars
63 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.