<prompt> Which one of the following amino acids is most likely to be found in the transmembrane region of a proteinLysineArginineLeucineAspartate  <response>: Hydrophobic or Nonpolar amino acids are present in transmembrane region.Hydrophillic or polar amino acids are present on outer surface of membrane.Leucine is a hydrophobic a.a. so it lies in transmembrane region. 