1.

In aqueoussolutionof amino aicds mostly existsin ,

Answer»

`NH_(2) - CH (R) - CO OH`
`NH_(2) - CH(R) - CO O`
`H_(3)N^(+) - CH(R) - CO OH`
`H_(3) N^(+) - CH(R) - CO O^(-)`

Answer :D


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