Biomedical Science Unit 1 Test

Question 1

What are Forensic Footprints?

Answer 1

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

Question 2

Digital Footprints

Answer 2

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

Question 3

Trace Evidence

Answer 3

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

Question 4

Locrad’s Principal

Answer 4

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

Question 5

What is hair composed of?

Answer 5

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

Question 6

Cuticle

Answer 6

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

Question 7

Cortext

Answer 7

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

Question 8

Medulla

Answer 8

the innermost part of the hair follicle

Question 9

Ridges that curve back on themselves

Answer 9

Loop

Question 10

Slope upward and then down slightly- the simplest finger print

Answer 10

Arch

Question 11

Form a circular spiral pattern

Answer 11

Whorl

Question 12

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

Answer 12

Tented Arch

Question 13

Minutiae

Answer 13

Tiny fingerprint ridge details that help match and compare fingerprints

Question 14

What is a latent fingerprint?

Answer 14

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

Question 15

How do you lift a latent fingerprint?

Answer 15

Transparent tape, after using powder to identify it

Question 16

What is digital forensics?

Answer 16

a branch of Forensics that focuses on evidence found on divices

Question 17

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

Answer 17

Examine- find and mark all evidence while not interferring

Question 18

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

Answer 18

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

Question 19

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

Answer 19

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

Question 20

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

Answer 20

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

Question 21

What is a legend?

Answer 21

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

Question 22

What are the three parts of a nucleotide?

Answer 22

Deoxyribose sugar, phosphate and nitrogen containing bases

Question 23

What kind of sugar is found in a nucleotide?

Answer 23

Deoxyribose Sugar

Question 24

What nucleotide component contains nitrogen?

Answer 24

The base

Question 25

What are the four different nitrogen baes?

Answer 25

Adenine, thymine, guanine, and cytosine

Question 26

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

Answer 26

Anti-parallel

Question 27

What base does adenine attach on to?

Answer 27

Thymine

Question 28

What base does Guanine attach on to?

Answer 28

Cytosine

Question 29

What is DNA

Answer 29

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

Question 30

DNA provides instructions for what?

Answer 30

To build proteins

Question 31

Each nucleotide is made up of what?

Answer 31

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

Question 32

What are the Four different bases

Answer 32

Adenine, Thymine, Cytosine, and Guanine

Question 33

Gene

Answer 33

a set of instructions for a specific protein

Question 34

Genome

Answer 34

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

Question 35

How does DNA help Forensic investigators?

Answer 35

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

Question 36

Cells

Answer 36

The smallest unit of capable of living idependently

Question 37

Organelle

Answer 37

Tiny structures that preform a function within a cell

Question 38

Eukaryotes

Answer 38

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

Question 39

Prokaryotes

Answer 39

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

Question 40

Chromosome

Answer 40

Tightly coiled packages of DNA

Question 41

Histone

Answer 41

small protein groups found in chromatin

Question 42

DNA is made up of paired...

Answer 42

Nitrogen bases

Question 43

DNA if found in basically all

Answer 43

Living cells

Question 44

In a eukaryotic cell DNA is found in the...

Answer 44

Nucleus

Question 45

DNA coil around____ to form a structure called _____

Answer 45

Hi stones, Chromosomes

Question 46

What are the four sources of DNA

Answer 46

White blood cells, Bone, Hair, and Bodily Fluids

Question 47

What is a DNA profile?

Answer 47

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

Question 48

How is DNA gathered from persons of interest?

Answer 48

Cheek swab

Question 49

What is the extraction of DNA?

Answer 49

Breaking open the cells to extract

Question 50

What is PCR

Answer 50

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

Question 51

What are the tree steps of PCR

Answer 51

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

Question 52

What do restriction enzymes cut?

Answer 52

DNA at specific nucleotide sequences

Question 53

What is the site called that an enzyme will cut?

Answer 53

Recognition sites

Question 54

What is the difference between Sticky and Blunt ends?

Answer 54

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

Question 55

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

Answer 55

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

Question 56

Where are restriction enzymes usually found

Answer 56

bacterial cells

Question 57

How many bases do restriction enzymes cite usually

Answer 57

4-12 bases

Question 58

Different DNA molecules will have a different number of____

Answer 58

Sequences of nitrogen bases