Rocephin is part of a class of drugs called cephalosporins. It prevents bacteria's ability to make and maintain their cell wall. Without a cell wall, bacteria are vulnerable and ultimately perish.
Criminalistics is one of many divisions in the field of forensic science. Forensic science includes forensic pathology, odontology, entomology, engineering, criminology, and other disciplines. All of these are specialized sections in forensic science.
Criminology is the study of crime and its causes, costs, and consequences. Criminal justice is the system in which crimes and criminals are detected, detained, tried and punished. People who study criminal justice actually learn about all the different components and inner workings of the system. The Components of the Criminal Justice System