The predominant form of histamine present in human blood is $$\left( {p{K_a},\,{\text{Histidine}} - 6.0} \right)$$
A.
B.
C.
D.
Answer :
Solution :
siucture of histamine
Blood is slightly basic in nature $$\left( {7.35\,pH} \right).$$ At this $$pH,$$ terminal $$N{H_2}$$ will get protonated due to more basic nature.
∴ Predominant structure of histamine is
Releted MCQ Question on Organic Chemistry >> Biomolecules
Releted Question 1
The pair of compounds in which both the compounds give positive test with Tollen’s reagent is