A Typical Amino Acid Has a Carboxylic Acid and an Amine

question 23

Multiple Choice

A typical amino acid has a carboxylic acid and an amine with pK_a values of 2.3 and 9.6, respectively. In a solution of pH 4.5, which of the following best describes the protonation and charge state of the amino acid?

• A)carboxylic acid: protonated and neutral; amine: deprotonated and negative
• B)carboxylic acid: protonated and neutral; amine: protonated and neutral
• C)carboxylic acid: deprotonated and negative; amine: protonated and neutral
• D)carboxylic acid: deprotonated and negative; amine: protonated and positive
• E)carboxylic acid: deprotonated and negative; amine: deprotonated and neutral

Identify the steps necessary for applying Kirchhoff's laws to solve circuit problems.

Apply the concept of equivalent circuits in simplifying complex circuit analyses.

Understand the evolution and importance of integrated supply chain management.

Recognize the factors and forces driving changes in supply chain management.

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