Unit 1 PBS Test
Muscular System
Muscles Moves the body and moves substances around the body; maintains posture; produces heat
Lividity
pooling of blood,
rigor mortis
stiffness of the body that sets in several hours after death
5 steps to crime scene investigation
1. Collect evidence 2. Sketch 3. Photograph 4. Interview 5. Examine
If theres 20% Thymine, how much is Adenine?
20%
cardiovascular system
Blood vessels transport blood which carries oxygen, carbon dioxide, nutrients, wastes, etc. The heart pumps blood.
skeletal system
Bones Protects and supports body organs and provides a framework the muscles use to support movement. Made up of bones and joints
What bases are pyrimidines?
Cytosine and Thymine
If a body is going through algor mortis (cooling of a dead body) in hot ambient temperature, the rate of cooling will ___
Decrease
endocrine system
Hormones, ovaries Releases hormones and regulate growth and reproduction
digestive system
Oral cavity, Esophagus, Stomach, Small intestine, Large intestine Breaks down food into nutrients
Scientists are able to produce millions of copies of a specific DNA sequence from a small amount of DNA through the process of...
Polymerase Chain Reaction
When running a gel electrophoresis, DNA will migrate towards the ________ end because DNA has a __________________ charge
Positive, Negative
What does RFLP stand for
Restriction Fragment Length Polymorphism
Spiral Method
Scenes with no physical barriers. Can begin at scene of death and move out or vice-versa.
Wheel/Ray Method
Small, circular crime scenes. Team starts at critical point and travels outward.
biomedical science
The application of the principles of the natural sciences to clinical medicine.
Algor Mortis
The cooling of the body after death
True or False? Police treat every death scene like a homicide
True
nervous system
brain, spinal cord, nerves Responds to internal and external changes
Inner most layer of hair
medulla
What is the macromolecule of DNA?
nucleic acid
DNA is found in the________of cells and acts as __________for creating __________
nucleus, blueprints, proteins
How many rings do pyrimidines have?
one
Cuticle
outermost layer of hair
Clinical Autopsy
performed to demonstrate significant disease processes within the body
Forensic Science
the application of science to law
Independant Variable
the thing that will be changed in each experiment
How many rings do purines have?
two
How many hydrogen bonds do Adenine and Thymine have?
2
How many hydrogen bonds do Cytosine and Guanine have?
3
Who is a medical examiner
A physician who performs an autopsy when death may be accidental or violent. He or she may also serve in some jurisdictions as the coroner.
What bases are purines?
Adenine and Guanine
Medical Examiners
Appointed specialists mainly in highly populated areas
Zone Method
Areas with predefined zones such as houses or buildings. Each search team is assigned a different zone. Other methods are incorporated.
Restriction enzymes were first discovered in this type of organism and used as a defense mechanism
Bacteria
If a body is going through algor mortis (cooling of a dead body) in cold ambient temperature, the rate of cooling will ___
Increase
Why is the shape of a protein important
It determines the protein's function.
Grid Method
Large outdoor scenes Searches follow line method, then rearrange perpendicular to the original search.
Line (Strip) Method
Large outdoor scenes. Search team is arranged at regular intervals, usually at arms length. Search in straight lines.
respiratory system
Lungs, Nasal Cavity Brings oxygen into the body. Gets rid of carbon dioxide.
Lymphatic/Immune System
Lymph nodes, Spleen, Thymus, Bone marrow Filters fluid in the body; mounts the attack against foreign substances in the body
Cortex
Middle layer of the hair
Link Search Method
No specific patters; Small or large areas Indoor or outdoor
In DNA profiling by gel electrophoresis, what is DNA separated on the basis of
Number of basepairs
What characteristic separates DNA fragments during gel electrophoresis
The length/size of the DNA fragment
What property of DNA causes it to migrate to the positive pole of the electrophoresis apparatus
The negative charge of DNA
What are 3 types of fingerprint patterns?
Worl, Arch, Radial Loop
Coroner
a public official who investigates by inquest any death not due to natural causes in rural areas
What is agglutination?
clumping of blood
crime-scene investigator
collect and analyze evidence
Forensic Pathologists/Medical Examiners
conduct autopsies
integumentary system
hair, skin, nails Forms the body's external covering; protects deeper tissue from injury; helps regulate body temperature.
Manners of death
homicide, suicide, accidental, natural, undetermined
urinary system
kidneys, ureters, urinary bladder, urethra eliminates waste from body, regulates water balancein blood
DNA is cut at specific nucleotide sequences by
restriction enzymes
4 parts to a crime scene sketch
sketch, legend, key, scale
