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.
Bitburg is a city in Germany, capital of the district Bitburg-PrÃ¼m, in the state of Rhineland-Palatinate. It is situated approx. 25 km (16 mi.) north-west of Trier, and 50 km (31 mi.) north-east of Luxembourg (city). Two American airbases, Bitburg Air Base and Spangdahlem Air Base, are located nearby.