<prompt> strand Hydrophobic amino acid is ?AlanineTyrosineGlycineHistidine  <response>: Ans. is a i.e.,Alanine Polar hydrophilic amino acidsNegatively charged acidic :- Aspaic acid aspaate, glutamic acid glutamatePositively charged basic :- Histidine, lysine, arginineUncharged neutral :- Asparagie, Cysteine, glycine, glutamine, serine, threonine, tyrosineNon-polar hydrophobic amino acidsWith aliphatic chain :- Alanine, isoleucine, leucine, methionine, proline, valineWith aromatic side chain :- Phenylalanine, tryptophanTyrosine and cysteine may show hydrophobic non-polar character when present in the interior of protein 