TV crime shows often lead the public to believe forensic science is fast, flawless, and always available. This misconception is known as
The CSI Effect
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| Term | Definition |
|---|---|
TV crime shows often lead the public to believe forensic science is fast, flawless, and always available. This misconception is known as | The CSI Effect |
Why is Locard’s Exchange Principle is MOST important in forensic science because it | Establishes that contact between two surfaces results in a transfer of material |
Which item should NOT be sent to the biology unit? | A bullet. |
What qualifies a forensic scientist as an expert witness? | They can give a scientific opinion based on evidence. |
What happens if evidence is not properly logged in the chain of custody? | It may not be admitted in court. |
What is the main purpose of national forensic databases? | To compare crime scene evidence with known records |
What is the primary goal of a forensic autopsy? | To determine the cause and manner of death. |
Entering a house to prevent destruction of evidence is which exception? | Risk of evidence destruction. |
Death from inhaling toxic fumes is classified as what cause of death? | Asphyxia. |
A heart attack in a 70-year-old is what manner of death? | Natural. |
Who has been found with identical fingerprints? | None to date. |
What is AFIS? | A computerized fingerprint storage and retrieval system. |
What must be compared to prove fingerprint identity? | Minutiae. |
Which microscope is most important in firearms examination? | Comparison microscope. |
Which microscope is best for birefringent minerals, fibers, crystals? | Polarizing microscope. |
Which instrument checks for GSR (gunshot residue)? | SEM. |
Which object is NOT expected to show evidential markings? | A shotgun pellet. |
Lands, grooves, and twist direction are what characteristics? | Class characteristics. |
Gunpowder residue around a bullet hole helps determine what? | Distance from which the gun was fired. |
Most important properties of glass for comparison? | Refractive index and density. |
Forcibly removed hair provides DNA because it contains what? | A follicular tag. |
Medullary index 0.24 + flattened scales indicates what? | Human hair. |
Next step after fibers match in color under a microscope? | Analyze dye composition with chromatography. |
Which shows psychological dependence? | Feeling anxious without marijuana. |
Main purpose of a drug screening test? | To narrow down possible drug identities. |
A mass spectrum matching methamphetamine means what? | The sample is confirmed as methamphetamine. |
Breath tests accurately estimate BAC because of what? | Fixed ratio between blood and alveolar breath alcohol. |
Why is segmental hair analysis useful? | It estimates when drugs were used. |
What technique uses an aerosol in hot plasma for elemental analysis? | ICP (Inductively Coupled Plasma). |
Side-by-side paint comparison evaluates what? | Color, texture, and layer sequence. |
Which test visualizes faint or cleaned bloodstains? | Luminol. |
What does the precipitin test determine? | Whether blood is human or animal. |
Most definitive test for semen? | Identification of sperm under a microscope. |
Primary function of PCR? | To make millions of copies of a DNA segment. |
Why analyze 13–20 STR loci? | To reduce the chance of a random DNA match. |
Best DNA test for male-specific profiling in mixed samples? | Y-STR. |
An inverted V-shaped burn pattern points to what? | The area of origin of the fire. |
Best container for storing accelerant evidence? | Best container for storing accelerant evidence? |
Infrared imaging helps visualize what? | Writing obscured by dark ink or marker. |
Key evidence in analyzing chemically altered documents? | Residual ink that changes color under UV/IR light. |