Biomolecules Question 145
Question: Amino acids usually exist in the form of Zwitter ions. This means that it consists of
[KCET 2000]
Options:
A) The basic group $ NH_2 $ and the acidic group $ -COOH $
B) The basic group $ -NH_3^{+} $ and the acidic group $ -CO_2 $
C) The basic group $ -CO_2^{-} $ and the acidic group $ NH_3^{+} $
D) No acidic or basic group
Show Answer
Answer:
Correct Answer: C
Solution:
Zwitter ion is a dipolar ion containing both a positive and negative charge in the following form $ \underset{\text{Zwitter ion}}{\mathop{R-\overset{\overset{NH_3^{+}}{\mathop{|}}}{\mathop{CH}}-CO{O^{-}}}} $ The basic group $ CO_2^{-} $ and acidic group $ NH_3^{+} $ .
BETA
