PBS

Question 1

what is the difference between blunt and sticky ends.

Answer 1

Blunt ends cut straight down the middle, sticky ends create more jagged cuts

Question 2

Presumptive

Answer 2

Initial testing that suggests a sample may be blood( Kastle Myer Test)

Question 3

Confirmatory

Answer 3

these tests confirm the presence of blood at a scene ( blood typing)

Question 4

Purines

Answer 4

Adenine and Guanine are double ringed

Question 5

Pyrimidines

Answer 5

Thymine and Cytosine are single ringed.

Question 6

Locards exchange

Answer 6

Every contact leaves a trace

Question 7

trace evidence

Answer 7

tiny fragments of physical evidence ( hairs)

Question 8

Plasma

Answer 8

produce antibodies to fight infections

Question 9

Leukocyte

Answer 9

white blood cells- defends the body against infections

Question 10

Thrombocyte

Answer 10

platelets- stops bleeding by forming blood clots

Question 11

Erythrocyte

Answer 11

red blood cells- transport oxygen from lungs to the bodys tissue

Question 12

how many minutiae must be present to confirm a match

Answer 12

12 to 15

Question 13

Layer of hair in order form innermost to outermost

Answer 13

medulla, cortex, cuticle

Question 14

blood splatter analyst

Answer 14

forensic scientist who analyzes blood patterns at crime scenes

Question 15

forensic scientist

Answer 15

analyze physical evidence to help solve crime scenes

Question 16

forensic investigator

Answer 16

collects and analyzes and preserves physical, digital evidence to solve crimes

Question 17

biomedical scientist

Answer 17

conducts scientific research and laboratory work to advance healthcare.

Question 18

What antigen is present in Blood type A

Answer 18

A

Question 19

What antibody is present in type A blood

Answer 19

anti B

Question 20

Type A blood can get blood from……

Answer 20

A, O

Question 21

Type A blood can give blood to……

Answer 21

A, AB

Question 22

what antigen is present in type B blood

Answer 22

b

Question 23

what antibody is present in type B blood

Answer 23

anti A

Question 24

Type B blood can get blood from…….

Answer 24

B, O

Question 25

Type B blood can give blood to.........

Answer 25

B, AB

Question 26

What antigen is present in type AB blood

Answer 26

A and B

Question 27

what antibody is present in type AB blood

Answer 27

none

Question 28

Type AB blood can get blood from.......

Answer 28

anybody

Question 29

Type AB blood can give blood to.......

Answer 29

AB

Question 30

what antigens are present in type O blood

Answer 30

none

Question 31

what antibody is present in type O blood

Answer 31

anti A and anti B

Question 32

type O blood can get blood from.....

Answer 32

O

Question 33

type O blood can give blood to.......

Answer 33

anybody

Question 34

is human blood every blue

Answer 34

no

Question 35

what does the term agglutination mean

Answer 35

clumping of particles

Question 36

what are antigens

Answer 36

sugars on the surface

Question 37

Universal donor is.....

Answer 37

Type O

Question 38

Universal recipient

Answer 38

AB positive

Question 39

how many chromosomes do human cells normally have

Answer 39

46

Question 40

what are histones

Answer 40

protein that DNA winds around to condense into chromosomes

Question 41

what is a DNA profile

Answer 41

the uniqueness of a persons DNA that gives us each a one of a kind DNA fingerprint.

Question 42

Polymerase chain reaction

Answer 42

A lab technique that produces multiple copies of DNA in a short period from a small piece of DNA.

Question 43

Restriction Enzymes

Answer 43

cuts DNA at specific places

Question 44

Restriction sites

Answer 44

a sequence of DNA where restriction enzyme cuts