Each is composed of two subunits with characteristic shape, and contains a total of four RNA molecules and about 70 different proteins.  
Since these organelles differ in size and chemical properties between prokaryotes and eukaryotes, anitbiotics such as tetracycline, streptomycin, and Zithromax can be used to target them and kill prokaryotic cells without hurting eukaryotic cells.  Each is composed of two subunits with characteristic shape, and contains a total of four RNA molecules and about 70 different proteins.  Manufactured in the nucleus and then released into the cytoplasm in order to function, name these organelles that are directly involved in protein synthesis and which, FTP, are found floating in the cytoplasm or attached to the endoplasmic reticulum.
Since these organelles differ in size and chemical properties between prokaryotes and eukaryotes, anitbiotics such as tetracycline, streptomycin, and Zithromax can be used to target them and kill prokaryotic cells without hurting eukaryotic cells.  
ribosomes