InterviewSolution
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InterviewSolution
| 1. |
The structure of a basic amino acid, lysine, is given below: `(HOOC-underset(.^(o+)NH_(3))underset(|)(C)H-(CH_(2))_(3)-CH_(2)overset(o+)(N)H_(3))(A)` The `pK_(a_1),pK_(a_2),` and `PK_(a_3)` of `(A)`, respectively, are: `2.18,8.95`, and `10.53`. What is the `pH` at isoelectric points `(pI)`?A. `(pK_(a_(1))+pK_(a_(2)))/(2)`B. `(pK_(a_(1))+pK_(a_(3)))/(2)`C. `(pK_(a_(2))+pK_(a_(3)))/(2)`D. `(pK_(a_(1))+pK_(a_(2))+pK_(a_(3)))/(3)` |
| Answer» Correct Answer - C | |