Assume that a particular amino acid has an isoelectric point of $6.0.$ In a solution at $pH \,1.0$ which of the following species will predominate ?
  • A$\begin{matrix}
       R\,\,\,  \\
       |\,\,\,\,  \\
       {{H}_{3}}\overset{+}{\mathop{N}}CHC{{O}_{2}}H  \\
    \end{matrix}$
  • B$\begin{matrix}
       R\,\,\,\,  \\
       |\,\,\,\,\,  \\
       {{H}_{3}}NCHC{{O}_{2}}H  \\
    \end{matrix}$
  • C$\begin{matrix}
       R  \\
       |  \\
       {{H}_{3}}\overset{+}{\mathop{N}}CHCO_{2}^{-}  \\
    \end{matrix}$
  • D$\begin{matrix}
       R\,\,  \\
       |\,\,  \\
       {{H}_{3}}NCHCO_{2}^{-}  \\
    \end{matrix}$
Medium
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