- Description
CJS/215
INTRODUCTION TO FORENSICS
The Latest Version A+ Study Guide
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CJS 215 Entire Course Link
https://hwsell.com/category/cjs-215
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CJS 215 Wk 1 – Explaining Forensics
Forensic science plays a major role in solving crime. The field of forensic science spans multiple disciplines. Over the years, as technology has advanced, the capabilities of forensic science units have increased. The purpose of this assignment is to show that you understand the scope of work in forensic science.
Write short-answer responses between 100 and 225 words each in response to the following:
- Describe the evolution of forensic sciences over time, including the role of key pioneers.
- Differentiate 2-3 of the 11 forensic science disciplines outlined in this week’s reading used to aid law enforcement officials in conducting their investigations. Provide examples of their scope of work and the role it plays in criminal investigations.
- Explain how forensic science is used in the criminal justice system.
Cite the sources used to support your assignment.
Note: In the criminal justice field, your written communication skills are paramount since much of these career options require report writing. Be certain to follow the rules of grammar so that flow of thought is maintained for the reader.
Submit your assignment.
CJS 215 Wk 1 Concept Check
- Question 1
Approximately how many crime labs are currently operating in the United States (including federal, state, county, and municipal labs)?
250
400
150
200
- Question 2
Forensic science is the application of science to:
Crime-scene reconstruction.
Civil laws.
Criminal laws.
Both civil and criminal laws.
- Question 3
Who undertook the first definitive study of fingerprints as a method of personal identification?
Gross
Lattes
Locard
Galton
- Question 4
Who established the first workable crime laboratory?
Osborn
Locard
Bertillon
Galton
- Question 5
Which of the following would not be included in the work of the biology unit of a crime lab?
Blood typing
Comparison of hairs
DNA profiling
Fingerprint analysis
- Question 6
Which unit is responsible for examining body fluids and organs for the presence of drugs and poisons?
Toxicology unit
Physical science unit
Biology unit
Trace evidence unit
- Question 7
Who is the final evaluator of forensic evidence?
Police
Jury
Accused
Media
- Question 8
Forensic odontology refers to the study of which of the following?
Teeth
Drugs
Bones
Rocks
- Question 9
The case of Coppolino v. State highlights issues dealing with what?
Search and seizure
Admissibility of the polygraph
Acceptability of new scientific tests
Warrantless searches
- Question 10
The scientific method requires that scientific evidence be validated by what means?
Formulating pertinent questions
Formulating hypotheticals
Performing experiments
All of the above
CJS 215 Wk 2 – Crime Scene Team
Congratulations, you have been chosen to participate in the future crime scene investigator program. You participated in a ride-along with a team of crime scene investigators and want to share what you learned with the class.
Prepare an 8- to 10-slide Microsoft® PowerPoint® presentation proposing forensic evidence that would be identified and collected while investigating a hypothetical crime of your choice.
Address the following in your presentation:
- A list of all crime scene team members that are usually present at scenes and their roles
- An explanation of the type of search pattern to be used along with methods of recording the scene
- An explanation of types of evidence that may be found and their proper collection and preservation procedures
- The procedures for securing and searching the scene to include crime scene safety
Include detailed speaker notes.
Format your assignment according to APA guidelines.
Submit your assignment.
CJS 215 Wk 2 Concept Check
- Question 1
After providing medical assistance for the injured and arresting any suspects on the scene, the first officer should immediately:
Search the scene.
Secure the scene.
Photograph the scene.
Make a rough sketch of the scene.
- Question 2
The center of the crime scene, which is always included within the crime scene’s boundary, is:
The area where the first responder entered the scene.
The area where the witnesses were located.
The area where the command center will be located.
The area where the crime occurred.
- Question 3
The conditions at a crime scene can be compromised by all of the following actions except:
Taking photographs at the crime scene.
Eating food at the crime scene.
Turning on a faucet on the crime scene.
Smoking at the crime scene.
- Question 4
The size and location of the crime scene as well as the events that occurred there will determine:
The kind of evidence that will be missing.
The time at which the crime scene is searched.
The kind of search pattern that will be used to located evidence.
The number of personnel who will process the evidence at the crime laboratory.
- Question 5
The purpose of the crime-scene search is to locate what?
DNA evidence
Physical evidence
Fingerprint evidence
Bloodstain evidence
- Question 6
To formulate a successful strategy for recovering relevant physical evidence at crime scenes, what must the investigator ultimately rely on?
Reference material
Experience
Training
The lead investigator
- Question 7
Which of the following may give clues about the timing of an incident?
Presence or absence of a television
Position of the day’s newspaper inside or outside of the house
Position of the victim’s vehicle
Whether a door is locked or unlocked
- Question 8
The scientific method requires that scientific evidence be validated by what means?
Formulating pertinent questions
Formulating hypotheticals
Performing experiments
All of the above
- Question 9
The advantages of recording crime-scene notes on an audio-recording device include all of the following except:
The notes can be recorded at the crime laboratory instead of at the crime scene.
The investigator’s hands are free to carry out other tasks while recording the notes.
Detailed notes can be spoken much faster than they can be written.
The notes are recorded as the observations are made.
- Question 10
Recording the details of a large outdoor crime scene or the relationship of multiple crime scenes may involve:
Infrared photography
Aerial photography
Night photography
Impression photography
- Question 11
Investigators should collect possible carriers of trace evidence, which may include which of the following?
Vacuum sweepings
Clothing
Fingernail scrapings
All of the above
- Question 12
Which of the following items is likely to contain DNA evidence?
Bedsheet
Blue rug fiber
Glass fragment
Self-adhesive mailing stamp
- Question 13
Which one of the following is a correct evidence-collection procedure?
Items recovered from the scene of a murder should be sent along with the body to the medical examiner.
All items collected from the same grid area should be packaged together.
Every item should be secured individually in a plastic bag to prevent contamination.
Bloodstained garments should be packaged separately in paper bags.
- Question 14
How must an evidence collector take care to avoid potentially contaminating objects of evidential value by transferral of DNA?
Reusing shoe covers
Wearing a face mask
Packaging items containing potential DNA evidence in airtight bags
Packaging all items containing potential DNA evidence in the same package
- Question 15
What is the list of all people who have come into possession of an item of evidence called?
Evidence log
Photography log
Chain of custody
Examination notes
- Question 16
Crime-scene reconstructions have the best chance of accuracy if the investigators do which of the following?
Exclude all testimonial evidence
Use proper documentation and collection methods for all types of evidence
Process all evidence at the crime laboratory
Trust their first instincts and test their first theories
- Question 17
A logical reconstruction of crime-scene events can be created by using which of the following processes?
Falsifiability
Inductive reasoning
Deductive reasoning
All of the above
- Question 18
What can re-enactments of crime-scene events provide insight into?
The physical plausibility of a reconstruction theory
The inconsistency of direct physical evidence
The age and physical fitness of those involved in the actual crime
All of the above
- Question 19
An event timeline will define each event that may have occurred at a crime scene:
Along with the mathematic probability of each event.
In various probable orders within a known or estimated time frame.
Accompanied by the exact time at which it occurred.
Accompanied by a re-enactment of the event.
- Question 20
The physical evidence that can be used to aid in a crime-scene reconstruction includes which of the following?
Blood spatters
Gunshot residues
Glass fragments
All of the above
CJS 215 Wk 3 – Crime Scene: Physical Evidence
The crime scene investigator team you shadowed last week is on the move again with a new call. Now you will incorporate what you learned last week with the new information learned this week. Your team was instructed to collect the physical evidence at a crime scene.
Arriving at the crime scene, your team observes the following:
- Shell casings
- Bloody fingerprints
- Drug paraphernalia
Write a 700- to 1,050-word crime scene report, completing the following:
- Identify additional types of physical evidence the team may have encountered at the crime scene and their significance.
- Describe the preservation and collection of the evidence.
- Offer explanations for your selected methods for packaging the evidence.
Cite any original sources used in writing your report.
Submit your assignment.
CJS 215 Wk 3 Concept Check
- Question 1
Who devised the fingerprint classification system used in most English-speaking countries?
Henry
Vucetich
Herschel
Fauld
- Question 2
What are the most commonly encountered ridge characteristics (used by AFIS)?
Ridge ending and island
Ridge crossing and short ridge
Bifurcation and ridge ending
Bifurcation and trifurcation
- Question 3
What is the minimum number of ridge characteristics necessary before two fingerprints can be identified as the same?
10
12
16
No minimum exists
- Question 4
To permanently alter his or her fingerprint and produce scars, a person must damage what?
Minutiae
Ridges
Epidermis
Dermal papillae
- Question 5
What is AFIS?
Computerized system for storing and retrieving fingerprint records
Method used to determine the age of a latent print
Computer system programmed to analyze hair
Assay technique used to identify drugs
- Question 6
Which of the following is a chemical method used for developing prints on nonporous surfaces?
Physical developer
Ninhydrin
Fuming with cyanoacrylate
DFO
- Question 7
What are the three most common types of handguns?
Rifles, pistols, and revolvers
Single-shot, rifles, and pistols
Single-shot, revolvers, and semi-automatics
Single-shot, rifles, and semi-automatics
- Question 8
The comparison of two bullets is possible with a comparison microscope. Such a comparison is made difficult by what fact?
Lands and grooves are subject to wear and tear, and hence striations markings are susceptible to continuing change.
Often, evidence bullets are distorted on impact and only small areas are found with intact markings.
The presence of grit and rust can to some degree alter the markings on bullets fired through the same barrel.
All of the above
- Question 9
What are IBISes?
Trade groups of firearms manufacturers
Safety education courses for firearm use
Automated screening tools for firearm evidence
Lists of licensed gun dealers
- Question 10
The likelihood of detecting gunshot residues on swabs taken from living subjects more than six hours after a firing has occurred is _____ the likelihood of detecting gunshot residues within two hours of a firing.
The same as
Less than
Greater than
- Question 11
Which technique of detecting gunshot residues holds the most promise for the immediate future?
Infrared spectroscopy
Scanning electron microscope (SEM) testing
Neutron activation analysis
Dermal nitrate test
- Question 12
After a gun is recovered from an underwater location, it should be:
Transported to the crime lab in a container with enough of the same water necessary to keep it submerged.
Placed in an airtight plastic bag.
Cleaned and dried.
Submitted to the crime lab in a paper bag.
- Question 13
Which physical symptom is part of abstinence syndrome?
Body chills
Stomach cramps and vomiting
Convulsions
All of the above
- Question 14
Scott Test solutions can indicate the presence of what drug?
Marijuana
Cocaine
Codeine
Librium
- Question 15
Which chromatographic process would be least likely to be utilized in the crime lab?
GC
TLC
GC/MS
Paper chromatography
CJS 215 Wk 4 – Crime Scene: Biological Evidence
Complete the Crime Scene Biological Evidence worksheet.
Submit your assignment.
CJS 215 Wk 4 Concept Check
- Which is not a factor in determining the rate at which alcohol is absorbed into the bloodstream?
The alcoholic content of the beverage
The presence or absence of food in the stomach
The amount consumed
All of the above are factors
- Question 2
If blood is not available, which of the following can’t the medical examiner use to determine the body’s alcohol content to a reasonable degree of accuracy?
Urine
Cerebrospinal fluid
Vitreous humor
Brain tissue
- Question 3
To analyze blood for alcohol, forensic labs normally use what?
TLC
GM/MS
LC
GC
- Question 4
The presence of high levels of carbon monoxide in the blood of a victim found at the scene of a suspicious fire is proof of what about the victim?
The victim died elsewhere and was brought to the fire scene after death.
The victim perished after the fire started.
The victim died before the fire started.
The victim was the arsonist.
- Question 5
The DRE program incorporates standardized methods for examining suspects to determine what?
Whether they are transporting any illegal substances
Whether they are involved in the buying or selling of drugs
Whether they are under the influence of one or more drugs
Whether they have ever taken one or more drugs
- Question 6
Which part of the hair shaft is most resistant to chemical decomposition?
Cortex
Medulla
Follicle
Cuticle
- Question 7
In determining whether a hair sample originated from a male or a female, what is the most important consideration?
Whether the hair is bleached
The results of DNA analysis performed on the root structure
Whether the hair was dyed
The length of the hair
- Question 8
The conviction of Ennis Cosby’s killer was aided by the DNA analysis performed on a hair that was crucial evidence in the case. Which of the following is true about this hair?
It belonged to Cosby and was found in the suspect’s car.
It belonged to the killer and was found in his cap, which he had wrapped the murder weapon in before discarding it.
It belonged to Cosby and was found clinging to the murderer’s jacket.
It belonged to the killer and was found on the body of the victim.
- Question 9
What fiber’s microscopic appearance includes a ribbon-like shape (i.e., flat) with twists at irregular intervals?
Polyester
Cotton
Kapok
Linen
- Question 10
In the collection of fiber evidence, great care should be taken to do what?
Avoid cross-contamination of evidence
Shake off all garments to be sent for examination before neatly folding them
Send as much potential evidence as possible to the crime lab to ensure that nothing is missed
Package all items from each individual together in one bag to avoid later confusion
- Question 11
Which blood components are directly pertinent to the forensic aspects of blood identification?
Platelets
Blood serum
Red blood cells
Both B and C
- Question 12
To determine whether a bloodstain is of human or animal origin, what will the serologist perform?
A precipitin test
The luminol test
An analysis with Hemastix strips
RIA
- Question 13
The technology of DNA typing had its beginnings in 1985 with the work of whom?
Henry Lee
Francis Crick
James Watson
Alec Jeffreys
- Question 14
Which of the following depicts correct base-pairing in DNA?
A-U
G-A
T-A
C-T
- Question 15
What does the PCR technique do?
Provides a statistical analysis of the nitrogenous-base pairings
Can produce many exact copies of segments of DNA
Produces information regarding the sequence of nitrogenous bases
Virtually eliminates operator error from DNA analysis
CJS 215 Wk 5 – Forensic Experts
Throughout the course you have been asked to share what you’ve learned while investigating crime scenes. Now that your experience on the investigative team is over, you get to share with your class what you learned about other roles and processes within forensic science and criminal justice.
Create a 10- to 12-slide Microsoft® PowerPoint® presentation, with speaker notes, on the topic of science and the detective. Include the following in your presentation:
- Describe the toxicology of drugs.
- Identify the role of the forensic pathologist, forensic entomologist, forensic toxicologist, and forensic anthropologist.
- Identify the investigative procedures involving computer forensics.
- Explain how each of these roles can work collectively to solve crimes.
Cite references to support your assignment.
Submit your assignment.
CJS 215 Wk 5 Concept Check
- Question 1
The types of autopsies do not include which of the following?
Criminal
External
Clinical
Medicolegal
- Question 2
Death intentionally caused by another person is typically ruled to be what?
Accident
Suicide
Homicide
Natural
- Question 3
Homicide, suicide, accident, natural, and undetermined are all categories of what?
Manner of death
Cause of death
Mechanism of death
Method of death
- Question 4
A corpse was discovered in an apartment last November. It was that of a 50-year-old male who died of a heart attack. At the time of discovery, the body temperature was determined to be 89°F. What is the most probable postmortem interval?
1 hour
2 hours
7 hours
4 hours
- Question 5
What might a forensic anthropologist create to help with the identification of the victim?
Autopsy chart
Dental profile
Fingerprint chart
Facial reconstruction
- Question 6
To determine the sex of skeletal remains, a forensic anthropologist would examine all of the following areas of the skeleton except which?
Hands
Pelvis
Sacrum
Femur
- Question 7
What part of a decedent’s body resists rapid decomposition and is used by forensic anthropologists to provide information about the decedent?
Teeth
Bones
Soft tissue
Cartilage
- Question 8
Which of the following indicators can be used to estimate the time of death?
Rigor mortis
Eye fluid potassium levels
Livor mortis
All of the above
- Question 9
Toxicological specimens are taken at which stage of the death investigation?
Death scene
Internal examination
External examination
Anytime
- Question 10
Time of death can be approximated by analyzing the vitreous humor for the levels of what?
Potassium
Calcium
Sodium
Magnesium
- Question 11
Which of the following is not considered a type of software?
Linux
Firefox
Excel
Random-access memory
- Question 12
What is the primary form of data storage within a personal computer?
CD-ROM
Hard disk drive
Zip drive
Recycle bin
- Question 13
What is one of the most common places to begin searching for evidential data?
Spreadsheet files
A photograph editing program
A CAD package
Word-processing or text-based document files
- Question 14
Once a file is deleted by a user, it:
Is obliterated from the system and cannot be recovered.
Is retained until the disk space it occupies is allocated for another use .
May be identified using forensic image acquisition software.
Both B and C
- Question 15
Which of the following is a software algorithm used to create a “fingerprint” of a file or an entire hard disk drive (HDD)?
MD5
ROM
RAM
MAC OS
- Question 16
Where should one not search for “visible” data?
Swab files
Temporary files
Unallocated space
Windows
- Question 17
Where should one not look for “latent” data?
RAM slack
File slack
Unallocated space
Temporary files
- Question 18
Where are files containing chat and instant messaging most likely stored?
Swab files
RAM
ROM
Slack files
- Question 19
What is the best way to initially handle a mobile device to preserve data?
Turn the mobile device off.
Leave the mobile device on.
Leave the mobile device on but place it in a Faraday shield.
None of the above
- Question 20
What is placed on a hard disk drive by a website to track certain information about its visitors?
Phish
IP address
Cookie