WorksheetsPBS 1.2.3 Review
Total questions: 37
Worksheet time: 31mins
Which of the following are factors that can affect rigor mortis?
temperature
activity before death
body weight
all of these
A body is found that shows no signs of rigor mortis. The body has been dead for ....
less than 2 hours or more than 24 hours
less than 2 hours or more than 36 hours
less than 24 hours or more than 48 hours
more than 36 hours
PMI is
postmortem insect
Postmeridian interval
Premortem interval
Postmortem Interval
one of five means by which someone dies
death
manner of death
cause of death
mechanism of death
An old woman dies peacefully in her sleep. There is no sign of foul play. What is her manner of death?
accidental
homicidal
natural
undetermined
During the first 12 hours after death, the body loses heat at a rate of ________.
1.4 oF/hour (0.78 oC/hr)
0.7 oF/hour (0.39 oC/hr)
Rigor mortis _________________.
begins in the fingers and toes and moves toward the center of the body.
begins in the center of the body and moves toward the fingers and toes.
begins at the head and neck and moves down the body.
begins at the feet and legs and moves up the body.
Is the time of death more than 12 hours, less than 12 hours, or cannot be determined? Body has lost 7.9 oF.
Less
More
Cannot be determined
What is the approximate time of death if the body temperature was 75 degrees Fahrenheit?
4.6 hrs
23 hours
15.6 hours
33 hours
This occurs 2-4 hours after death, where the blood pools due to gravity. The area affected is a bluish-red color.
rigor mortis
algor mortis
livor mortis
A body is found with a blue-purple coloring across the back and the back of the legs. What does this indicate?
the victim died laying on their stomach
the victim died laying on their back
the victim was exercising prior to death
the victim died in a cold environment
A body is found sitting upright in a chair, however the front of the body (chest, stomach, and thighs) are colored blue-purple. What does this indicate?
the victim died sitting in the chair
the victim died laying on their back
the victim was moved after death
the victim died from unusual circumstances
Exercising prior to death causes rigor mortis to occur
faster
slower
A cold environment causes algor mortis to occur
faster
slower
The victim’s body is not rigid and is warm. How long has she been dead?
0-2 hours
2-6 hours
15-36 hours
36-48 hours
Another term that is used in forensics to describe the environmental temperature in which a body is found is known as ____.
Room Temperature
Ambient Temperature
Outdoor Temperature
Location Temperature
When a person dies, their body loses heat energy and the temperature of the corpse will decrease until an equilibrium is reached. This is known as ____.
Rigor Mortis
Livor Mortis
Algor Mortis
Decomposition
The body of a runner was found in the park one early, hot summer morning. The ambient temperature was 89°F (far above normal room temperature). The body displayed rigor in the face and neck area. Which of the following is the BEST prediction for TOD?
1-2 hours
4-6 hours
12-14 hours
What is the purpose of gel electrophoresis in DNA analysis?
To separate DNA based on size
To visualize DNA fragments
To create a DNA profile
To compare DNA sequences
How does agarose gel separate DNA fragments?
By filtering DNA based on size
By staining DNA fragments
By visualizing DNA profiles
By binding to DNA molecules
What is the purpose of a DNA ladder/standard in gel electrophoresis?
To determine the size of unknown DNA fragments
To visualize DNA fragments
To compare DNA sequences
To create a DNA profile
What is the role of the buffer in gel electrophoresis?
To conduct the electric current
To stain the DNA fragments
To filter DNA based on size
To create indentations in the gel
What is the purpose of staining DNA fragments after gel electrophoresis?
To make the fragments visible
To separate DNA based on size
To determine the size of unknown DNA fragments
To compare DNA sequences
Which suspect is linked to the crime scene by this DNA analysis
Suspect A
Suspect C
Suspect D
Suspect B
