Forensic Science Units (A+ Guaranteed Answers)

Physical Science Unit correct answers Applies principles and techniques of chemistry, physics, and geology to the ID and comparison of crime-scene evidence. Uses chemical tests and modern analytical instrumentation for the examination of items as diverse as drugs, glass, paint, explosives, and soil. Biology Unit correct answers Biologists and Biochemists who apply their knowledge to the ID and DNA profiling of dried blood stains and other bodily fluids, the comparison of hairs and fibers, and the ID and comparison of botanical materials such as wood and plants. Firearms Unit correct answers Examination of firearms, discharged bullets, cartridge cases, shotgun shells, and ammunition of all types. Document Examination Unit correct answers The handwriting and typewriting on questioned documents are studied to assure authenticity and/or source. Other responsibilities include analysis of paper and ink, examination of indented writings, obliterations, erasures, and burned/charred documents. Photography Unit correct answers Examine and record physical evidence. Procedures require the use of highly specialized photographic techniques such as digital imaging, infrared, ultraviolet, and x-ray photographs to make invisible info visible to the naked eye. Aids in the preparation of photographic exhibits for courtroom presentation. Toxicology Unit correct answers Body fluids and organs are examined to determine the presence or absence of drugs and poisons. Field instruments such as the Intoxilyzer are used to determine the alcoholic consumption of individuals and often this unit has the responsibility of training operators as well as maintaining and servicing these instruments. Latent Fingerprint Unit correct answers Processing and examining evidence for latent fingerprints when they are submitted with other lab examinations. Polygraph Unit correct answers Lie detector tests are normally handled by well trained people of criminal investigation and interrogation although some units are incorporated into the lab administrative structures of police agencies. Voiceprint Analysis Unit correct answers Cases involving telephoned threats or tape-recorded messages, analysts can tie the voice to a particular suspect. A lot of work in this unit is done a sound spectrograph called a voiceprint which displays a visual sound pattern of a person's voice which is unique to each individual. Evidence-Collection Unit correct answers Dispatches specially trained personnel to crime scenes to collect and preserve physical evidence that will later by processed at the crime lab. Forensic Science correct answers The application of science to criminal and civil laws that are enforced by police agencies in a criminal justice system.