The unit for the of a wave is the Hz, which means "per second."

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

lesson summarykaryotypes a genome is the full set of all the genetic information that an organism carries in its dna. chromosomes arebundles of dna and protein found in the nucleus of a eukaryotic cell.