What is the structure of amino acids?

An alpha carbon, An amino group (H3N+), a carboxylic acid group (COO-), a proton (H), and an R group

Define Zwitterionic

Having regions that are negatively and positively charged, but an overall neutral charge

Which Amino Acids have nonpolar, aliphatic R groups?

Gylcine, Alanine, Valine, Leucine, Isoleucine, and Proline

Which Amino Acids have polar, uncharged groups?

Serine, Methionine, Cysteine, Tyrosine, Asparagine, Glutamine, Threonine

Which Amino Acids have negatively charged R groups?

Glutamate and Aspartate

Which Amino Acids have positively charged R groups?

Histidine, Lysine and Arginine

Which Amino Acids have aromatic rings in the R groups?

Tyrosine, Phenylalanine, and Tryptophan