The correct option is E Fatty acid - Insulin
Insulin is a protein hormone and has amino acids as a monomer. Chitin is a polymer of N-acetylglucosamine which in turn is a derivative of glucose. A nucleotide consists of the nitrogenous base, phosphate moiety and pentose sugar, thymine is one of the nitrogenous bases. Haemoglobin is heme containing protein and has amino acids as its building blocks. Uric acid is a nitrogenous compound. Thus, the correct answer is A.