Final Exam Forensic Science

What is the major problem facing the forensic DNA community?

• Backlog of unanalyzed DNA samples
• Contamination of DNA samples by evidence collectors
• Lack of recent advancements in DNA technology
• Mistrust of DNA profiling results by the public

A compound microscope is equipped with two objective lenses (20x and 40x) and has a 10x ocular lens. The highest magnification attainable with this instrument is:

• 100x.
• 4000x.
• 400x.
• 800x.

A rough sketch does not include:

• date, location, and time of the incident.
• location of all recovered physical evidence.
• location of walls, door and windows on scene
• sketch of the suspect.

A substance with a pH of 11 is likely to be:

• Acidic
• Basic
• Corrosive
• Neutral

Algor mortis refers to the:

• Cooling of body after death.
• Pooling of blood after death.
• Stiffness of death.
• Time of death.

Characteristic markings on the skin caused from the discharge of a firearm is known as:

• blood.
• clotting.
• staining.
• stippling.

The pressure of the pumping of oxygenated blood out of an injury causes bright red-colored blood to spurt out and form a(n):

• arterial spray pattern.
• none of the above.
• satellite pattern.
• void pattern.

If a fire starts in the laboratory, immediately

• Douse it with baking soda.
• Open the window.
• Run from the room screaming.
• Walk for the fire extinguisher.

Flotation is a method used by scientists to determine the ________ of a particle of glass.

• density
• mass
• refractive index
• temperature

Homicide, suicide, accident, natural, and undetermined are all categories of:

• Cause of death.
• Manner of death.
• Mechanism of death.
• Method of death.