UNIT 5 REVIEW

Last updated about 6 years ago

30 questions

Note from the author:

1

Library

UNIT 5 REVIEW

Last updated about 6 years ago

30 questions

Note from the author:

For Portola High School Forensic Science

1

Explain your answer choice for the question above (this question will say it's wrong if it's not exactly what I put so don't worry about that)

1

Here is the an image of an immunoassay. Draw your own in the space provided to show more than one type of antibody.

1

Draggable item		Corresponding Item

1

Below is an example of GCMS (YAY), with 2 knowns and 1 unknown. Draw lines (peaks) for the unknown to solve for what was in the victims system at the time of death. Circle the known GCMS when you think you've figured it out.

1

Below is an example of GCMS (DEAR LORD THIS IS GREAT), with 3 knowns and 1 unknown. Draw lines (peaks) for the unknown to solve for what was in the victims system at the time of death. Circle the known GCMS when you think you've figured it out.

1

Use the following information to answer the next few questions: 
You enter the scene of a crime and observe 2 bodies on the floor, dead. 
Body one (Male, late 20's - early 30's): ecchymosis on the rib cage that was a lighter color than the one on his back near his kidneys; abrasion/laceration across his face; a large puncture wound in his chest
Body two (Female, late 20's - early 30's): bloodied fingernails on her right hand; a small puncture wound near her temple on her skull. 

1

What is the most logical order of events (note, some may have taken place way before the crime)

Use the information below to answer the next few questions.
A neighbor calls police after hearing troubling noises of some shrieking coming from a house occupied by an elderly woman and a caretaker that her family pays for. When police arrive at the scene they find the woman welcoming them into the house. The caretaker is also there using a stern tone with the old women as she moves into the room behind the police. Police notice ecchymosis on the legs of the older woman as well as a laceration on her arm. When questioned on it she claimed she just had a terrible fall and her arm caught on the table. She claimed the shriek was from the fall and nothing more. When further questioned on previous "falls" (this is not the first phone call police have recieved), she says that due to her Parkinsons she is prone to more accidents, hense why her children got her a caretaker. 

1

Do you think the older woman is telling the truth why or why not? What would she have to gain by lying?

1

If you end up needing some guidence on how to solve for a bullets trajectory, below is a video to give step by step instructions. It will also be posted on the Homework Document

1

How can bullet trajectory be helpful for police investigations?

Use this crime scene information to solve for questions 24-26. 

At a crime scene, police found a gunshot victim on the 4th story of a building (55 feet above ground level). They only had entry wounds to the body (chest cavity), no exit wounds could be found. However, severl of the bullets shot did pass through the railing of the balcony that was made out of a decorative wooden structure. 

1

If it is calculated that the distance between the hole in the balcony railing and the most likely bullet hole in the victim from that same bullet is about 3 inches, and the chest cavity is about 19 inches thick, what is the angle of elevation? Round to the nearest tenth or whole number if it's really close to a whole number (you do not need to type "degree's")

1

Use the angle of elevation that you just solved for and the information already given to determine how far away the shooter was. Round to the nearest whole number.

1

How can bloodstains help give you the sequence of events at a crime scene

1

Draw examples of a passive bloodstain, transfer bloodstain, and a projected bloodstain. For projected please designate if it is medium or high velocity.

For Portola High School Forensic Science

Select all that apply: Toxicity of a given substance depends on _________

Put in order of slowest to fastest delivery routes for drugs

Inhalation
Injection
Ingestion

Explain your answer choice for the question above (this question will say it's wrong if it's not exactly what I put so don't worry about that)

An immunoassay can give you a specific kind of drug. (ex: morphine - specific vs. opiod - general class)

True

False

Place the words into the correct category. 2 words in each catagory (1) what it is (2) where it comes from

Antigens
Antibodies
From our body
Toxins

Works as a flag for the immune system
Causes an immune response

Here is the an image of an immunoassay. Draw your own in the space provided to show more than one type of antibody.

Mercury poisoning is an example of both Duration and Type of Exposure because..... (Select 2)

Mercury can be housed in muscles if it makes it into the bloodstream through injestion, meaning it stays in the system longer. 

Mercury exposure can cause different levels of toxicity based on how much mercury you are exposed to at a given time.

The longer you are exposed to mercury, the longer you are feeling the same symptoms of poisoning

The longer you are exposed to mercury, the more it builds up in your system, causing damages to organs such as your testies or ovaries (leading to birth defects). 

Match the toxin to the effect in the body

Draggable item		Corresponding Item
Heroine		Blocks production of ATP in our mitochondria during the Electron Transport Chain because it blocks oxygen recieving hydorgens to complete the chain. The person will have normal amounts of Oxygen in their blood
Arsenic		Binds of hemoglobin in red blood cells much more redily and for longer than oxygen. The person will not have oxygen being delivered to their cells, leading to no production of ATP.
Ricin		Normally injected as a poison into the body, this suppresses respiratory function of the body (slows down breathing and thus heartrate). Can cause death through apnea
Carbon Monoxide		Can be made from the waste products of castor bean processing. Inhibits the cells ability to perform protein synthesis of essential proteins needed for cell survival. Will lead to cell death and ultimately the death of the organism
Cyanide		Interferes with enzyme-mediated processes in the body, stopping various enzymes all over the body to stop functioning properly. Difficult to diagnosis because it causes a wide range of problems.

It is important to get a sample from various parts of the body (blood, urine, liver, muscles) when testing for toxins because:

Toxins will affect different areas of the body differently

Some toxins will only be located in specific regions/parts of the body

Some toxins will migrate throughout the body at different stages of their "life" in the body

Toxins will be in different concentrations depending on the part of the body you are looking at

Peaks in a GCMS are caused by the chemical structure of the drugs you are analyzing

True

False

Below is an example of GCMS (YAY), with 2 knowns and 1 unknown. Draw lines (peaks) for the unknown to solve for what was in the victims system at the time of death. Circle the known GCMS when you think you've figured it out.

Below is an example of GCMS (DEAR LORD THIS IS GREAT), with 3 knowns and 1 unknown. Draw lines (peaks) for the unknown to solve for what was in the victims system at the time of death. Circle the known GCMS when you think you've figured it out.

Match the type of wound to the description

Information: where a victim fell
Appearance: clean cut
Cause: Severance of limbs through large force
Causes: Friction between surface and skin
Appearance: jagged cut on the body
Appearance: Missing limb
Causes: slice/cut with (typically) a sharp object
Cause: Hacking motion from object
Information: Act of aggression, couldn't amputate part of body
Information: post mortem wound most of the time, act of severe aggresion
Appearance: Flap of skin hanging from the body
Information: attacked with sharp object or an object at a high speed
Appearance: similar to road rash

Abrasions
Laceration
Avulsions
Amputation

What wound does this image depict?

Laceration

Avulsion

Puncture

Abrasion

What wound does this image depict?

Amputation

Laceration

Avulsion

Puncture

What wound does this image depict?

Ecchymosis

Puncture

Avulsion

Laceration

What wound does this image depict?

Avulsion

Ecchymosis

Amputation

Puncture

Use the following information to answer the next few questions: 
You enter the scene of a crime and observe 2 bodies on the floor, dead. 
Body one (Male, late 20's - early 30's): ecchymosis on the rib cage that was a lighter color than the one on his back near his kidneys; abrasion/laceration across his face; a large puncture wound in his chest
Body two (Female, late 20's - early 30's): bloodied fingernails on her right hand; a small puncture wound near her temple on her skull. 

Who was the aggressor?

Male

Female

Which of the following would not be a logical conclusion

The female was abusive to the male

The female showed remorse for the crime

The male had this premeditated (it wasn't a crime of passion)

The male was submissive in the relationship

What is the most logical order of events (note, some may have taken place way before the crime)

Use the information below to answer the next few questions.
A neighbor calls police after hearing troubling noises of some shrieking coming from a house occupied by an elderly woman and a caretaker that her family pays for. When police arrive at the scene they find the woman welcoming them into the house. The caretaker is also there using a stern tone with the old women as she moves into the room behind the police. Police notice ecchymosis on the legs of the older woman as well as a laceration on her arm. When questioned on it she claimed she just had a terrible fall and her arm caught on the table. She claimed the shriek was from the fall and nothing more. When further questioned on previous "falls" (this is not the first phone call police have recieved), she says that due to her Parkinsons she is prone to more accidents, hense why her children got her a caretaker. 

Do you think the older woman is telling the truth why or why not? What would she have to gain by lying?

Elderly abuse is a HUGE problem in our society. What are 2 reasons as to why it is difficult to detect

Older individuals tend to overexagerate to get attention

Older individuals do tend to hurt themselves more often

People tend to not believe them because their mind can deteriorate

People tend to listen to their elders only when they need advice 

If you end up needing some guidence on how to solve for a bullets trajectory, below is a video to give step by step instructions. It will also be posted on the Homework Document

How can bullet trajectory be helpful for police investigations?

Use this crime scene information to solve for questions 24-26. 

At a crime scene, police found a gunshot victim on the 4th story of a building (55 feet above ground level). They only had entry wounds to the body (chest cavity), no exit wounds could be found. However, severl of the bullets shot did pass through the railing of the balcony that was made out of a decorative wooden structure. 

At a crime scene, police found a gunshot victim on the 4th story of a building (55 feet above ground level). They only had entry wounds to the body, no exit wounds could be found. How could they get an approximate Angle of Elevation? (Select 2)

Make an approximation of where the bullet should have exited from the known distance

Make an approximation of where the bullet should have exited from the known height

Look for another point of contact the the bullet made

Make a horizon inside the body parallel to the ground

If it is calculated that the distance between the hole in the balcony railing and the most likely bullet hole in the victim from that same bullet is about 3 inches, and the chest cavity is about 19 inches thick, what is the angle of elevation? Round to the nearest tenth or whole number if it's really close to a whole number (you do not need to type "degree's")

Use the angle of elevation that you just solved for and the information already given to determine how far away the shooter was. Round to the nearest whole number.

Sort the weapon/injury into the correct vecolity

Gunshot
passive bloodstain
hit with blunt weapon
laceration of an artery
100 feet per second
projected bloodstain
cast off
made by gravity
A nose bleed
25 feet per second
stabbed with knife
mist-like spray

Low Velocity
Medium Velocity
High Velocity

The angle of impact, determined by the roundness ratio, can help to determine the origin of the attack.

True

False

How can bloodstains help give you the sequence of events at a crime scene

Draw examples of a passive bloodstain, transfer bloodstain, and a projected bloodstain. For projected please designate if it is medium or high velocity.

Select all that apply: Toxicity of a given substance depends on _________

Existance of a antidote

Duration of exposure

How your body metabolizes (processes) the drug

Dose

Nature of exposure

Interactions with other substances

Put in order of slowest to fastest delivery routes for drugs

Inhalation

Injection

Ingestion

An immunoassay can give you a specific kind of drug. (ex: morphine - specific  vs. opiod - general class)

True

False

Place the words into the correct category. 2 words in each catagory (1) what it is (2) where it comes from

Antigens

Antibodies

From our body

Toxins

Works as a flag for the immune system

Causes an immune response

Mercury poisoning is an example of both Duration and Type of Exposure because..... (Select 2)

Mercury can be housed in muscles if it makes it into the bloodstream through injestion, meaning it stays in the system longer. 

Mercury exposure can cause different levels of toxicity based on how much mercury you are exposed to at a given time.

The longer you are exposed to mercury, the longer you are feeling the same symptoms of poisoning

The longer you are exposed to mercury, the more it builds up in your system, causing damages to organs such as your testies or ovaries (leading to birth defects). 

Match the toxin to the effect in the body

Heroine

Blocks production of ATP in our mitochondria during the Electron Transport Chain because it blocks oxygen recieving hydorgens to complete the chain. The person will have normal amounts of Oxygen in their blood

Arsenic

Binds of hemoglobin in red blood cells much more redily and for longer than oxygen. The person will not have oxygen being delivered to their cells, leading to no production of ATP. 

Ricin

Normally injected as a poison into the body, this suppresses respiratory function of the body (slows down breathing and thus heartrate). Can cause death through apnea

Carbon Monoxide

Can be made from the waste products of castor bean processing. Inhibits the cells ability to perform protein synthesis of essential proteins needed for cell survival. Will lead to cell death and ultimately the death of the organism

Cyanide

Interferes with enzyme-mediated processes in the body, stopping various enzymes all over the body to stop functioning properly. Difficult to diagnosis because it causes a wide range of problems. 

It is important to get a sample from various parts of the body (blood, urine, liver, muscles) when testing for toxins because:

Toxins will affect different areas of the body differently

Some toxins will only be located in specific regions/parts of the body

Some toxins will migrate throughout the body at different stages of their "life" in the body

Toxins will be in different concentrations depending on the part of the body you are looking at

Peaks in a GCMS are caused by the chemical structure of the drugs you are analyzing

True

False

Match the type of wound to the description

Information: where a victim fell

Appearance: clean cut

Cause: Severance of limbs through large force 

Causes: Friction between surface and skin

Appearance: jagged cut on the body

Appearance: Missing limb

Causes: slice/cut with (typically) a sharp object 

Cause: Hacking motion from object

Information: Act of aggression, couldn't amputate part of body

Information: post mortem wound most of the time, act of severe aggresion

Appearance: Flap of skin hanging from the body

Information: attacked with sharp object or an object at a high speed

Appearance: similar to road rash

Abrasions

Laceration

Avulsions

Amputation

What wound does this image depict?

Laceration

Avulsion

Puncture

Abrasion

What wound does this image depict?

Amputation

Laceration

Avulsion

Puncture

What wound does this image depict?

Ecchymosis

Puncture

Avulsion

Laceration

What wound does this image depict?

Avulsion

Ecchymosis

Amputation

Puncture

Who was the aggressor?

Male

Female

Which of the following would not be a logical conclusion 

The female was abusive to the male

The female showed remorse for the crime

The male had this premeditated (it wasn't a crime of passion)

The male was submissive in the relationship

Elderly abuse is a HUGE problem in our society. What are 2 reasons as to why it is difficult to detect

Older individuals tend to overexagerate to get attention

Older individuals do tend to hurt themselves more often

People tend to not believe them because their mind can deteriorate

People tend to listen to their elders only when they need advice 

At a crime scene, police found a gunshot victim on the 4th story of a building (55 feet above ground level). They only had entry wounds to the body, no exit wounds could be found. How could they get an approximate Angle of Elevation? (Select 2)

Make an approximation of where the bullet should have exited from the known distance

Make an approximation of where the bullet should have exited from the known height

Look for another point of contact the the bullet made

Make a horizon inside the body parallel to the ground

Sort the weapon/injury into the correct vecolity

Gunshot

passive bloodstain

hit with blunt weapon

laceration of an artery

100 feet per second

projected bloodstain

cast off

made by gravity

A nose bleed

25 feet per second

stabbed with knife 

mist-like spray

Low Velocity

Medium Velocity

High Velocity

The angle of impact, determined by the roundness ratio, can help to determine the origin of the attack.

True

False