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Histamine, a Vasodilator, Is Responsible for a Wide Variety

Question 31

Multiple Choice

Histamine, a vasodilator, is responsible for a wide variety of physiological effects.Rank the three nitrogen atoms in histamine in increasing order of basicity, putting least basic nitrogen atom first. <sup> </sup>Histamine, a vasodilator, is responsible for a wide variety of physiological effects.Rank the three nitrogen atoms in histamine in increasing order of basicity, putting least basic nitrogen atom first. A) N2 < N1 < N3 B) N1 < N2 < N3 C) N3 < N1 < N2 D) N3 < N2 < N1


A) N2 < N1 < N3
B) N1 < N2 < N3
C) N3 < N1 < N2
D) N3 < N2 < N1

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