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            A-LEVEL Exam A-LEVEL Chemistry
                    
                        3.3.13.1 Amino acids
                    
                                    
                
                    
                        3.3.13.2 Proteins
                    
                                    
                
                    
                        3.3.13.3 Enzymes
                    
                                    
                
                    
                        3.3.13.4 DNA
                    
                                    
                