What Is the PI of Phenylalanine (PK_a1 = 1

question 62

Multiple Choice

What is the pI of phenylalanine (pK_a1 = 1.8; pK_a2= 9.1) ?

• A)2.3
• B)1.8
• C)5.5
• D)9.1
• E)10.9

---

Definitions:

Payment Date

The specified date on which a payment, such as a dividend or bond interest, is made by a company to its shareholders or bondholders.

Negotiable

Something that can be discussed or altered in order to reach an agreement; in finance, refers to instruments like checks or bills of exchange that can be transferred to another party.

Optional Payment

A payment made by choice as opposed to requirement, often seen in loan agreements where the borrower may pay more than the minimum due.

Maturity Date

the specific date on which a financial instrument, such as a loan or bond, reaches its expiration and the principal is due to be repaid.