-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

Differentiate between types of stock (common, preferred, no-par) and their characteristics.

Record transactions related to stock subscriptions and their collections.

Comprehend the impact of stock transactions on financial statements.

Identify the accounts involved in stock issuance and subscription transactions.

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