The amino acid R is dissolved in water at pH = 7.76. Which of the following statements is true? The amino acid R is dis

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The amino acid R is dissolved in water at pH = 7.76. Which of the following statements is true?
The amino acid R is dissolved in water at pH = 7.76. Which of the following statements is true?
The amino acid will have a net charge of +3.
The amino acid will have a net charge of -1.
The amino acid will have a net charge of -2.
The amino acid will have a net charge of +1.
The amino acid will have a net charge of +2.
The amino acid will have a net charge of 0.
For the pH vs. kcat profile below, what is the most likely amino acid that accounts for the observed profile and what are the possible types of catalysis in which it can participate? Explain.