Prof. LorranaCurso:

Técnico em QuímicaPeríodo: 2º Data:22/08/2014

Aluno: Vale: 4,0 Nota:______

Avaliação nº01(N1)

Instruções para a realização da prova: Responder as questões à caneta na folha de rascunho.

01) Cite quatro propriedades físico-químicas da água e explique a sua importância nos sistemas bioquímicos. (1,0 ponto)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

02) Quais são as principais características que diferem os seres vivos dos seres não vivos. Explique. (0,5 ponto)____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

03) Defina o que são aminoácidos e proteínas e cite exemplos. (0,5 ponto)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

04) Considerando a classificação dos aminoácidos de acordo com a natureza do grupo da cadeia lateral, identifique quais os aminoácidos a seguir são apolares ou polares ácidos, básicos ou neutros. (1,0 ponto)

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Ácido aspártico Alanina Histidina

06) A glicina apresenta três formas de ionização, mostradas na figura abaixo. Explique como ocorre o processo de titulação deste aminoácido com o NaOH, a partir do pH=1,0. (1,0 ponto)

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