Question 16.CC.2: R Groups and Polarity of Amino Acids Compare the types of at......

Chemistry: An Introduction to General, Organic, and Biological Chemistry [1013382]

R Groups and Polarity of Amino Acids
Compare the types of atoms and the polarity of the R groups in each of the following:
a. valine b. threonine c. lysine

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a. The R group in valine contains only C and H atoms, which makes valine a nonpolar amino acid.
b. The R group in threonine contains C atoms, H atoms, and an —OH group, which makes threonine a polar neutral amino acid.
c. The R group in lysine contains C atoms, H atoms, and an — ${NH_{3}}^{+}$ group, which makes lysine a polar basic amino acid.

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