-Refer to Exhibit 3A

question 22

Multiple Choice

$$\begin{array}{l}\text { Exhibit } \mathbf { 3 A } \text { (for this chapter) }\\\begin{array} { l l l l } \text { Amino acid } & \boldsymbol { \alpha } \text {-carboxyl group pK a } & \boldsymbol { \alpha } \text {-amino group pK a } & \text { R-group pK } \\\hline \text { Ala } & 2.3 & 9.7 & \\\text { Arg } & 2.2 & 9.0 & 12.5 \\\text { Asn or Gln } & 2.1 & 9.0 & 4.0 \\\text { Asp or Glu } & 2.2 & 9.8 & 8.3 \\\text { Cys } & 1.7 & 10.8 & 6.0 \\\text { His } & 1.8 & 9.2 & \\\text { Ser } & 2.2 & 9.2 & 10.1\end{array}\end{array}$$
-Refer to Exhibit 3A. Which of these amino acids could act as a good buffer at pH = 4.5

• A) Alanine
• B) Arginine
• C) Asparagine
• D) Cysteine
• E) Aspartic Acid

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Definitions:

Independent Projects

Investment opportunities that do not affect the cash flows or profitability of other projects considered by an entity.

Managerial Decision

The process by which management responds to opportunities and threats by analyzing options and making determinations about specific organizational goals and courses of action.

NPV

NPV (Net Present Value) is a calculation used to assess the profitability of an investment by discounting future cash flows back to their present value.

IRR

The Internal Rate of Return (IRR) serves as a financial measure designed to calculate the potential profitability of investments.