Amino Acids Flashcards
1
Q
Name the two groups always present in an amino acid
A
Amine
Carboxylic acid
2
Q
Which side of an amino acid is a proton donor and which side is a proton acceptor ?
A
Amine = base = proton acceptor
COOH = acid = proton donor
3
Q
What is a zwitterion?
A
An ion possessing a positive and negative functional group
4
Q
Give 2 attributes of a zwitterion
A
- no overall charge
- forms at a ‘isoelectric point’
5
Q
Why can NH2 react with dilute HCl ?
A
N electron pair can accept a H+
