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All Forensics TSA questions and answers graded A+ 2024/2025
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All Forensics TSA questions and answers graded A+ 2024/2025
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All Forensics TSAAutopsy - ANSThe internal and external examination of a body after death. An autopsy is
performed to confirm or determine the cause of death and establish other pre-death conditions,
such as the type of food last consumed and the time it was consumed.
Ballistics - ANSThe study of the motion of bullets and their examination for distinctive
characteristics after being fired. Examiners can use this evidence to match bullets or bullet
fragments to specific weapons.
Blood Splatter - ANSThe pattern of blood that has struck a surface. This pattern can provide
vital information about the source of the blood. Can help determine the size and type of wound,
the direction and the speed with which the perpetrator or victim was moving, and the type of
weapon used to create the blood spill.
Caliber - ANSThe diameter of the bore of a rifled firearm, usually expressed in hundredths of an
inch or in millimeters.
Composite Drawing - ANSA sketch of a suspect produced from eyewitness descriptions of one
or more persons.
Criminology - ANSThe study of criminal activity and how it is dealt with by the law.
DNA - ANSDeoxyribonucleic acid. Double helix strand. Genetic code (fingerprint). 50% from
mom and 50% from dad. ACGT.
DNA Electrophoresis - ANSThe technique by which DNA fragments are placed in a gel and
charged with electricity. An applied electric field then separates the fragments by size, as part of
the process of creating a genetic profile.
DNA Profiling - ANSThe process of testing to identify DNA patterns or types. In forensic science
this testing is used to indicate parentage or to exclude or include individuals as possible sources
of bodily fluid stains (blood, saliva, semen) and other biological evidence (bones, hair, teeth)
Evidence - ANSAnything that has been used, left, removed, altered, or contaminated during the
commission of a crime or other event under investigation
Fingerprint - ANSThe unique patterns created by skin ridges found on the palm sides of fingers
and thumbs.
Forensic Science - ANSThe application of science to law. The application of science to those
criminal and civil laws that are enforced by police agencies in a criminal justice system. The
,focus of forensics is the crime lab. The crime lab uses the principles and technique of biology,
chemistry, physics, geology, anthropology, and other sciences in order to place physical
evidence into a professional discipline.
Absolute Certainty - ANSultimate sureness with no implication of possible change.
Accountability - ANSthe quality of subordinate workers being responsible for his/her own work
and answerable to a superior.
Accuracy - ANSthe degree of conformity of a measured quantity to its actual (true) value.
Acetone - ANSa colorless, highly flammable chemical compound used as an organic solvent, an
ingredient in many lacquer thinner compounds and adhering liquids.
Accelerant - ANSan agent, often an ignitable liquid, that acts to initiate a fire or increase its rate
of spread.
Administrative documentation - ANSrecords such as case related conversations, evidence
receipts, description of evidence packaging and seals, and other pertinent information.
Administrative (or Laboratory Director) Case File Review - ANSa detailed final review of the
case file documentation. A member other than the assigned analyst must conduct the
Laboratory Director case file review on all case files.
Algor mortis - ANSthe postmortem cooling of the body.
Analytical Data - ANSall case specific records such as notes, worksheets, graphs, spectra,
printouts, computer data files, photographs, photocopies, microscopic slides and other data or
records.
Analytical Procedure - ANSan orderly step-by-step process designed to ensure operational
uniformity and to minimize systematic variability.
Analyst - ANSany ADFS personnel assigned to perform scientific investigation or evidential
examination.
Ante mortem - preceding death Antigens - ANSforeign substances in the body that are capable
of causing disease.
Arson - ANSthe intentional and unlawful burning of a building or other property.
Assessment - ANSthe process of evaluating analysts to determine their level of technical
knowledge, skills, and abilities.
, Asphyxiation - ANSa medical term for suffocation, which leads to lack of oxygen in the blood.
Audit - ANSa review conducted to compare the various aspects of the laboratory's performance
with a standard for that performance.
Back spatter - ANSblood directed back toward the source of energy or force that caused the
spatter; often associated with entrance gunshot wounds.
Ballistics - ANSbranch of physics that deals with the flights of projectiles.
Base pair - ANScombination of 2 nucleotides (A and T or G and C) held together by weak
hydrogen bonds; the DNA double helix is formed when a base pair of nucleotides in the DNA
strands are connected by these bonds.
Bile - ANSa digestive fluid made by the liver and stored in the gallbladder that helps digest fats.
Biology - the science that studies living organisms. - ANS
Blind or Double-Blind Sample Technique - ANSa type of proficiency testing where the member
is not aware that the sample/case under analysis is a quality assessment sample.
Blood borne pathogens - ANSpathogenic microorganisms in blood or other body fluids that can
cause disease in people. These pathogens include, but are not limited to, hepatitis B virus
(HBV) and human immunodeficiency virus (HIV) in all of its forms.
Bloodstain - ANStransfer resulting when liquid blood comes into contact with a surface.
Calibration - ANSthe set of operations which establish, under specified conditions, the
relationship between values indicated by a measuring instrument or measuring system, or
values represented by a material, and the corresponding known values of a measurement.
Case File - the hard copy case folder which contains all or part of the documentation forming the
case record. - ANS
Case Record - ANSall notes, reports, custody records, charts, analytical data, and any
correspondence generated in the laboratory pertaining to a particular case, which may be
located in the hard copy case folder or the LIMS.
Case Management - ANSthe approach for setting up a logical methodology for acceptance,
analytical work, priority, transfer, and return related to work conducted.
Cause of death - ANSdisease or injury that initiates the lethal train of events leading to death.
Cerebral edema - the presence of a large amount of water in the spaces of the brain. - ANS
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