Why amino acids are called Zwitterions?

Related questions

1. Are amino acids Zwitterions at physiological pH?
2. Why is glycine a buffer?
3. Are all Zwitterions neutral?
4. Why is glycine soluble in water?
5. Why is glucose soluble in water?
6. How is glycine synthesized?
7. Why do amino acids when dissolved in water become Zwitterions?
8. Can Acetanilide form Zwitterion?
9. At what pH are amino acids Zwitterions?

Tags

1. #interacts
2. #dissolves
3. #entire
4. #acting
5. #zwitterions
6. #contain
7. #charge
8. #basic
9. #amine
10. #examples
11. #molecules
12. #zwitterion
13. #known
14. #water
15. #molecule
16. #carboxylic
17. #group
18. #amino
19. #acids
20. #acidic