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 U.S. state of Pennsylvania and the county seat of Dauphin County. With a population of 49,673, it is the ninth-largest city in the U.S. state of Pennsylvania. It lies on the east bank of the Susquehanna River, 105 miles (169 km) west-northwest of Philadelphia and 204 miles (328 km) east of Pittsburgh.