Polar Amino Acids An amino acid is polar when the R group is an alcohol, thiol, or amide. 11. Acidic Amino Acids An amino acid is acidic when the R group is a carboxylic acid. 12. Basic Amino Acids An amino acid is basic when the R group is an amine.
Friedensburg is a census-designated place (CDP) in Schuylkill County, Pennsylvania, United States. The population was 828 at the 2000 census.
Fairplay, Pennsylvania. Fairplay is a populated place in Adams County, Pennsylvania, United States. It is located between the Gettysburg Battlefield and the MasonâDixon line at the intersection of U.S. Route 15 in Pennsylvania and the Emmitsburg Road near Marsh Creek, in Freedom Township.