阿摩線上測驗
1. Glutamic acid contains two carboxylic acid groups (pKa = 2.2 and 4.2) and an amine group (pKa = 9.7). What is the pI for glutamic acid? What is glutamic acid's net charge in a solution with pH =7.4?
(A) 3.2, negative charge
(B) 6.0, negative charge
(C)6.5, no charge
(D) 7.0, positive charge
(E) none of the above
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統計： A(45), B(14), C(4), D(12), E(0) #2911757
統計： A(45), B(14), C(4), D(12), E(0) #2911757
