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.
Harrisburg (Pennsylvania German: Harrisbarig) is the capital city of the Commonwealth of Pennsylvania in the United States, and the county seat of Dauphin County. With a population of 49,673, it is the tenth-largest city in the Commonwealth. It lies on the east bank of the Susquehanna River, 107 miles (172 km) west of Philadelphia.