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76 Cards in this Set
- Front
- Back
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Class Characteristics |
Evidence associated only with a group Ex., soil or hair |
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Comparison |
Subject specimen and standard/reference specimen undergo the same analysis to determine whether or not they have a common origin.
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Identification |
determining the physical or chemical identity of a substance with as much certainty as possible.
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Individual Characteristics |
Evidence that can be associated to a common source with an extremely high degree of probability
Ex., ridge characteristics of fingerprints, bullet markings, handwriting |
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Product Rule |
A formula for determining how frequently a certain combination of characteristics occurs in a population. |
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Rapid DNA |
the fully automated process of developing a CODIS Core STR profile from a reference sample buccal swab.
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IAFIS |
The Integrated Automated Fingerprint Identification System
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CODIS |
Combined DNA Index System
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NIBIN |
National Integrated Ballistics Information Network
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IBIS |
Integrated Ballistic Identification System
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PDQ |
Paint Data Inquiry
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SICAR |
Shoeprint Image Capture and Retrieval Database |
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Nam Us |
National Missing and Unidentified Persons System
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Binocular |
Two eye pieces
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Condenser |
Lens in the microscope |
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Depth of Focus |
the depth of the specimen layer which is in sharp focus at the same time |
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Eyepiece Lens |
It's the eyepiece |
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Field of View |
The diaphragm diameter actually seen through eyepiece |
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Monocular |
One eye piece |
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Objective Lens |
Magnifies the objective |
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Parfocal |
a lens that stays in focus when magnification/focal length is changed. |
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Polarized light |
light waves in which the vibrations occur in a single plane. |
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Polarizer |
an optical filter that lets light of a specific polarization pass and blocks waves of other polarizations |
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Real image |
an image which is located in the plane of convergence for the light rays that originate from a given object |
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Transmitted illumination |
the light is transmitted from a source on the opposite side of the specimen from the objective |
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Vertical or Reflected illumination |
choice for fluorescence and for imaging specimens that remain opaque even when ground to a thickness of 30 microns. |
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Virtual image |
Image seen by our eyes |
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Compound microscope |
Ocular + objective lens |
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Comparison Microscope |
Can have slides side by side and viewed at the same time from one lens |
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Stereoscopic Microscope |
designed for low magnification observation of a sample, typically using light reflected from the surface of an object rather than transmitted through it. |
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Microspectrophotometer |
used to measure spectra of microscopic samples or microscopic areas |
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Body Tube |
Under the ocular |
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Coarse Adjustment |
Big knob |
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Fine Adjustment |
Small knob |
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Illuminator |
The light |
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Euglena |
Euglena is a genus of single-celled flagellate Eukaryotes. Long oval with a whip thing |
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Paramecium |
Paramecium is a genus of unicellular ciliated protozoan, commonly studied as a representative of the ciliate group. Long oval covered in cilia |
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Diatoms |
Diatoms are a major group of algae, and are among the most common types of phytoplankton. Diatoms are unicellular, although they can form colonies in the shape of filaments or ribbons, fans, zigzags, or stars. |
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Volvox |
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Vorticella |
Vorticella is a genus of protozoa, with over 16 known species. They are stalked, inverted bell-shaped ciliates, placed among the peritrichs. |
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Micrasteria |
Micrasterias is a unicellular green alga of the order Desmidiales. Its species vary in size reaching up to hundreds of microns. |
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Dichotomous Key |
Word flow chart to lead you to a genus |
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Trace evidence |
Fibers, hair, soil, etc., |
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Identification |
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Comparison |
Comparing |
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Iodine Test |
Starch |
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Diaphragm |
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How should a microscope be clean? |
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What are the steps taken to view a prepared slide. |
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What is the purpose of the diaphragm? |
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How is a wet mount prepared? |
To make a wet mount place a sample on the slide. Using an eyedropper put a drop of water on the sample. Place one end of the cover slip on the slide and slowly lower the other end using the end of a toothpick. This will help to prevent air bubbles from getting trapped under the cover slip. |
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What is the difference between class and individual evidence? |
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Resolution |
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Magnification |
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Hans Janssen |
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Zacharias Janssen |
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Robert Hooke |
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Anton Van Leeuwenhoek |
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TEM |
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SEM |
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What and Why: Solubility in HCl test |
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What and Why: Water solubility |
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What and Why: Solubility in vinegar |
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What and Why: pH Test |
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What and Why: Reaction with NaOH |
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What and Why: Copper Reduction |
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What and Why: Conductivity Test |
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What is the proper format for a crime lab report? |
Logos and location at top, lab id, evidence tracking #, date of sub, date of analysis, agency, agency case #, suspect name, suspect dob, evidence item description, analysis method, results/conclusion |
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What is a microbe? Where can they be found? |
Bacteria, fungi, and Protozoa Can be found anywhere in the biosphere |
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How do Niche's and habitat's relate to Forensics? |
Microbes are found in certain niches and habitats |
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What kind of diagnostic tests are done on a victim found in water? |
Peripheral lung tissue, chemical digestion, bone marrow |
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What do diatoms found in bone marrow infer? |
They were drowned forcefully/where they were drowned |
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What does diatom removed from lung tissue tell investigators? |
That they were in a body of water at some point in their death |
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What can seasonal diatoms mean? |
When the death occured |
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What are diatoms? where can they be found? |
Single cell eukaryotes found in water made of silica |
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How do diatoms get into bone marrow? |
Forceful Inhalation of water |
