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The topic “amino acids” was analyzed in eleven textbooks of Biology for High School, approved in the National Plan of Didactic Books of 2012 and 2015, and in six Biochemistry textbooks for higher education. This particular topic allows the exemplification of pKa and Buffer systems, which is important to the understanding of structure and function of proteins and enzymes although considered hard by undergraduate students of Health Science majors. At least one problem that leads to misconceptions was identified in the Biology textbooks. On the contrary, the subject is clearly presented in the Biochemistry textbooks, although a few vices of language in the definition of the structure of amino acids”, para “in the definition of amino acids structure. A suggestion of collaborative approach that is shown to be effective in this and in related subjects is presented.

Os Aminoácidos nos Livros Didáticos de Biologia do Ensino Médio e de Bioquímica do Ensino Superior