10 Identify the functional group in A. carboxylic anhydride B. carboxylic ester C. carboxylic acid D. amide 11. Carbohydrates have the general formula. Which of the following statements is true for all disaccharides? 12 Identify the functional group in A. carboxylate anhydride B. ketone C. phosphate ester D. phosphate anhydride 13 Which of the following terms describe the relation between D-allose and D-mannose? Both sugars are aldohexoses. diastereomers B. enantiomers C. anomers D. constitutional isomers