Polysaccharides, lipids, and proteins are similar in that they A) are synthesized from monomers by dehydration reactions. B) are synthesized as a result of peptide bond formation between monomers. C) are decomposed into their subunits by dehydration reactions. D) are synthesized from monomers by the process of hydrolysis. E) all contain nitrogen in their monomer building blocks. Solution The answer is A. Are synthesized from monomers by dehydration reactions. Peptide bond is present in polypeptides only hence the option b is wrong. They are formed by dehydration decomposed by hrdration hence options c and d are wrong. N molecule is not present in all polysac hence option E is wrong..