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Entomology Test Review (FA)

Total questions: 50

Worksheet time: 3hrs 53mins

Name
Class
Date
1.
The living insect in the stage prior to metamorphosis in the blow fly life-cycle is called the _________.
a)
pupae
b)
pupal case
c)
puparium
d)
none of these
2.
The fact that insect development is _________________ allows insects to be used to determine time since death.
a)
irregular
b)
predictable
c)
constant
d)
unpredictable
3.
The major variable in the fly’s life cycle is ____________________.
a)
moisture
b)
pressure
c)
temperature
d)
barometer
4.
According to forensic entomologists, which "witness" is the first to arrive at the crime scene? 
a)
mite
b)
spider
c)
carrion beetle
d)
blow fly
5.
Prior to _______ hours after death, algor mortis, livor mortis and rigor mortis are used instead of entomology evidence.
a)
36
b)
48
c)
72
d)
96
6.
During this stage house flies begin to appear and deposit eggs 
a)
fresh stage
b)
post-decay stage
c)
bloated stage
d)
decay stage
7.
Forensic entomology is often used to help estimate the time of death.
a)
True
b)
False
8.
Evidence of tampering with the position of a body after death can be obtained by evaluating what?
a)
Rigor mortis
b)
Algor mortis
c)
Livor mortis
d)
Algor mortis & Livor mortis
9.
Estimations of the postmortem interval (PMI) using entomological evidence must take into account ______________________. 
a)
the species of insect present
b)
weather conditions
c)
geographical locations of the decedent's body
d)
all of these
10.
What does PMI stand for? 
a)
pre mortem interval 
b)
post memory interval 
c)
post murder interval 
d)
post mortem interval 
11.
How does temperature have an effect on insect evidence? 
a)
temp. does not effect insect evidence 
b)
high temp. speeds up insect's life cycle 
c)
low temp. speeds up insect's life cycle 
12.
Which of the following is the correct order of the life cycle of a blow fly? 
a)
egg, pupa, 1st, 2nd, 3rd larva, adult 
b)
larva, egg, pupa, adult 
c)
adult, 1st, 2nd, 3rd larva, egg 
d)
egg, 1st, 2nd, 3rd larva, pupa, adult 
13.
In general, the older the insects around the dead body are....
a)
the longer the body has been dead
b)
the less time the body has been dead
c)
the more blood the body lost 
d)
the hotter the temp. around the body is 
14.

What are the stages of metamorphosis in a fly's life cycle? (in order)

a)

Egg, pupa, larva, maggot, adult

b)

Larva, pupa, egg, adult

c)

Egg, larva, maggot, pupa, adult

d)

Egg, larva, pupa, adult

15.

A scientist who needs a larger sample of DNA would use which test to make more?

a)

Gel Electrophoresis

b)

Capillary Electrophoresis

c)

Polymerase Chain Reaction

d)

Short Tandem Repeats

16.

What is CODIS?

a)

DNA test that compares suspects to crime scenes

b)

Database containing DNA sample results from the US and its territories

c)

Organization that uses DNA testing to catch criminals

d)

A special computer used by the FBI to match samples of DNA to people

17.

Which of these suspects are most likely guilty?

a)

1

b)

2

c)

3

d)

Crime Scene

18.

A body is found that shows no signs of rigor mortis. The body has been dead for ....

a)

less than 2 hours or more than 24 hours

b)

less than 2 hours or more than 36 hours

c)

less than 24 hours or more than 48 hours

d)

more than 36 hours

19.

Which statement about decomposition is true?

a)

an overweight person will decompose faster than a thin person

b)

a buried body will decompose slower than an unburied body

c)

decomposition will happen faster if the body is submerged in water

d)

temperature does not affect the rate of decomposition

20.

A body is found with blistering skin that is slipping off of the muscle underneath. There is a strong odor and maggots are seen covering the body. Which stage of decomposition is this body in?

a)

bloating (putrefaction)

b)

advanced decay

c)

active decay (black putrefaction)

d)

fresh (initial)

21.

An elderly man is found dead in his car with the windows down. He has been missing for 2 days. The average temperature has been 36 degrees F. How would these factors affect lividity, rigor mortis, and algor mortis rates?

a)

lividity - decreases

rigor - decreases

algor - increases

b)

lividity - decreases

rigor - increases

algor - unaffected

c)

lividity - decreases

rigor - unaffected

algor - increases

d)

lividity - increases

rigor - increases

algor - increases

22.

How do we find the ADH or accumulated degree hours?

a)

multiply the ambient temp by the maggot mass temp

b)

divide the maggot mass temp by the time

c)

multiply the ambient temp by the time

d)

divide the ambient temp by the time

23.

A body was found inside a home with windows open. It was 45 degrees in the home. The entomologist finds 3rd instar larva (which show up around day 5-6). What is a good estimate of time of death?

a)

more than 5-6 days

b)

less than 5-6 days

c)

the same amount of time

d)

cannot be determined

24.

Many different insects will be present on dead bodies. Which one to entomologists usually use?

a)

blow flies

b)

house flies

c)

skipper flies

d)

flesh flies

25.
The cooling of body temperature after death is:
a)
algor mortis
b)
livor mortis
c)
rigor mortis
d)
pallor mortis
26.
Another name for the larva stage of development in insects is:
a)
pupa
b)
egg
c)
instar
d)
cocoon
27.
Rigor mortis means
a)
Death stiffness
b)
Death color
c)
Death bloat
d)
Death heat
28.

Complete or Incomplete Metamorphosis?

a)

Complete because it has 3 stages

b)

Complete because it has 4 stages

c)

Incomplete because it has 3 stages

d)

Incomplete because it has 4 stages

29.
Complete or Incomplete Metamorphosis 
a)
Complete because the stages look the same throughout its life 
b)
Complete because the stages look different throughout its life
c)
Incomplete because it looks the same throughout its life 
d)
Incomplete because it looks different throughout its life 
30.
How do you know this insect is undergoing incomplete metamorphosis? 
a)
The insect changes color when it becomes an adult.
b)
The first stage of the insects development is as an egg.
c)
The insect undergoes more than four stages in its development.
d)
The insect has similar body parts throughout its development.
31.
Which stage is worm-like and eats a lot? 
a)
Nymph
b)
Egg
c)
Adult
d)
Larva
32.
The four types of information one needs to know when using maggot evidence are __________.
a)
Genus of insect, oldest stage of blowfly, temperature data, and development data
b)
Species of insect, oldest stage of blowfly, temperature data and development data
c)
Genus of insect, youngest stage of blowfly, temperature data and development data
d)
Species of insect, youngest stage of blowfly, temperature data and development data
33.
During the  __________ stage, blow fly larvae are delicate and prone to desiccation.
a)
first instar
b)
second instar
c)
third instar
d)
fourth instar
34.
____________________ is a broad term meaning the application of the study of insects to legal cases.
a)
Forensic anthropology
b)
forensic odontology
c)
forensic pathology
d)
forensic entomology
35.
Blow flies will be the main insects used to determine time since death in the ________ after death.
a)
first days
b)
first hours
c)
first weeks
d)
first months
36.

The presence of insects on the body that are not found in the area suggests the body was moved, and may indicate the type of area where the murder took place.

a)

True

b)

False

37.

When maggots occur at openings other than natural opening, this may indicate_______

a)

neglect of the victim

b)

a wound

c)

a natural occurence of death

d)

where the death occured

38.

Which causes the maggots feeding on affected tissues to develop much faster than they normally would.

a)

Cocaine

b)

Water

c)

Blood

d)

None of these answers

39.

If maggots feed on a body with drugs in its system, those chemicals accumulate and can not be detected.

a)

True

b)

False

40.

Insects found on a young child or senior adult indicate......

a)

Abuse

b)

Nothing at all

c)

Manner of Death

d)

PMI

41.

An insect found from a specific site may......

a)

place the suspect at the scene of the crime

b)

indicate that the body could have been moved

c)

determine where the death took place

d)

post mortem interval

42.

The presence of insects on the body that are not found in the area suggests

a)

how long the body has been dead

b)

the body may have been moved

c)

when the body died

d)

where the death took place

43.

The total amount of thermal energy that is received over a period of days.

a)

Accumulated degree days

b)

Accumulated degree hours

c)

Post mortem interval

d)

Autolysis

44.

If it takes 24 hours for an egg to reach the first instary at 77°F, at what temperature should you place your eggs so that they hatch in 27 hours?

a)

70 degrees F

b)

60 degrees C

c)

68.4 degrees F

d)

27 degrees F

45.

An egg was hatched into a 1st instar at 55°F. It took 1 day and 10 hours. Based on this information, how long would it take for the same type of development to occur at 66°F

a)

28 days and 3 hours

b)

28.3 days

c)

1 day

d)

1 day and 4 hours

46.

The calculation for ADH is....

a)

Time x Heat

b)

Time x Temperature

c)

Temperature x degrees

d)

there is no calculation

47.
A forensic entomologist is...
a)
A person who studies insects to gain clues about a crime
b)
a person who studies bones to gain clues about a crime 
c)
a person who studies DNA to gain clues about a crime 
d)
a person who studies fire and arson 
48.
What can entomologists know by studying the insects at a crime scene?
a)
who the victim is 
b)
PMI 
c)
who probably commited the crime 
d)
the crime autopsy 
49.
Which of the following is not a common factor that could have an effect on insect evidence? 
a)
where the body was located 
b)
the weather conditions 
c)
age the person was when they died 
d)
drugs or poisons present 
50.
All types of insect species arrive at the body almost immediatly after it dies 
a)
true
b)
false 

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