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Periodic table > Biomedical Science Unit 1 Test > Flashcards

Biomedical Science Unit 1 Test Flashcards

Activities and definitions

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Periodic Table flashcards
1
Q

What are Forensic Footprints?

A

Things that can be examined to trade activities and provide a record of where they have been

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2
Q

Digital Footprints

A

Digital clues left on things like a cell phones. Everyone’s digital footprint is traceable

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3
Q

Trace Evidence

A

Tiny fragments of physical evidence such as hair fibers or pieces of glass

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4
Q

Locrad’s Principal

A

Every time you make contact with a person, place or thing it results in exchange of physical evidence- It is impossible for a criminal to act without leaving traces

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5
Q

What is hair composed of?

A

Three layers, the cuticle, the cortex, and the medulla

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6
Q

Cuticle

A

Scale like cells that overlap one another on the outermost part of the hair follicle

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7
Q

Cortext

A

Home to the pigment and is responsible for the hair color the middle and thickest part and the texture of the persons hair

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8
Q

Medulla

A

the innermost part of the hair follicle

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9
Q

Ridges that curve back on themselves

A

Loop

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10
Q

Slope upward and then down slightly- the simplest finger print

A

Arch

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11
Q

Form a circular spiral pattern

A

Whorl

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12
Q

The center goes upwards into a stiff peak and then back down on both sides

A

Tented Arch

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13
Q

Minutiae

A

Tiny fingerprint ridge details that help match and compare fingerprints

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14
Q

What is a latent fingerprint?

A

a fingerprint left on the surface by the oils on someones skin and are usually not visible to the naked eye

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15
Q

How do you lift a latent fingerprint?

A

Transparent tape, after using powder to identify it

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16
Q

What is digital forensics?

A

a branch of Forensics that focuses on evidence found on divices

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17
Q

What is the first thing to do when processing a crime scene?

A

Examine- find and mark all evidence while not interferring

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18
Q

What is the second thing to do when processing a crime scene?

A

Sketch- create a diagram with the layout, position of victim, evidence with the markers, evidence list, legend and scale

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19
Q

What is the third thing to do when processing a crime scene?

A

Collect evidence- sealing and packaging to be sent to a lab if need be

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20
Q

What is the fourth and final thing to do when processing a crime scene?

A

Interview the people who first responded to the crime, the person who reported it, and any witnesses

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21
Q

What is a legend?

A

The legend contains the date time, location, and temperature on a sketch of the crime scene

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22
Q

What are the three parts of a nucleotide?

A

Deoxyribose sugar, phosphate and nitrogen containing bases

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23
Q

What kind of sugar is found in a nucleotide?

A

Deoxyribose Sugar

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24
Q

What nucleotide component contains nitrogen?

A

The base

25
Q

What are the four different nitrogen baes?

A

Adenine, thymine, guanine, and cytosine

26
Q

How are the DNA strands placed in relation to one another?

A

Anti-parallel

27
Q

What base does adenine attach on to?

A

Thymine

28
Q

What base does Guanine attach on to?

A

Cytosine

29
Q

What is DNA

A

a negativity charged molecule found in the cells of all living things

30
Q

DNA provides instructions for what?

A

To build proteins

31
Q

Each nucleotide is made up of what?

A

Phosphate, Sugar, and one of the four different nitrogenous bases

32
Q

What are the Four different bases

A

Adenine, Thymine, Cytosine, and Guanine

33
Q

Gene

A

a set of instructions for a specific protein

34
Q

Genome

A

all of the DNA in one organism that contains the entire set of instructions to build that organism

35
Q

How does DNA help Forensic investigators?

A

DNA can link a person of interest to a scene or identify a nameless victim.

36
Q

Cells

A

The smallest unit of capable of living idependently

37
Q

Organelle

A

Tiny structures that preform a function within a cell

38
Q

Eukaryotes

A

All animals, plants, fungi, and many unicellular organisms are eukaryotes.

39
Q

Prokaryotes

A

The other type of cell that does not have any membrane bound organelles and only contain bacteria

40
Q

Chromosome

A

Tightly coiled packages of DNA

41
Q

Histone

A

small protein groups found in chromatin

42
Q

DNA is made up of paired…

A

Nitrogen bases

43
Q

DNA if found in basically all

A

Living cells

44
Q

In a eukaryotic cell DNA is found in the…

A

Nucleus

45
Q

DNA coil around____ to form a structure called _____

A

Hi stones, Chromosomes

46
Q

What are the four sources of DNA

A

White blood cells, Bone, Hair, and Bodily Fluids

47
Q

What is a DNA profile?

A

a DNA fingerprint also known as a DNA profile that gives us each one of a king

48
Q

How is DNA gathered from persons of interest?

A

Cheek swab

49
Q

What is the extraction of DNA?

A

Breaking open the cells to extract

50
Q

What is PCR

A

a technique that allows us to make billions of copies of specific pieces of DNA

51
Q

What are the tree steps of PCR

A

Open up the DNA-Denaturation
Find target- annealing
Fill in- extension

52
Q

What do restriction enzymes cut?

A

DNA at specific nucleotide sequences

53
Q

What is the site called that an enzyme will cut?

A

Recognition sites

54
Q

What is the difference between Sticky and Blunt ends?

A

sticky-one is longer than the other blunt- they both are equal

55
Q

How can restriction enzymes show a difference among different individuals DNA?

A

Individuals Code determines the number of times a restriction enzyme will cut and the number and cit of their DNA pieces.

56
Q

Where are restriction enzymes usually found

A

bacterial cells

57
Q

How many bases do restriction enzymes cite usually

A

4-12 bases

58
Q

Different DNA molecules will have a different number of____

A

Sequences of nitrogen bases

Periodic table (1 decks)

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