Font size
Worksheets10292021 PBMS 1.1.5 & 1.1.6
Total questions: 40
Worksheet time: 22mins
The diameter of a blood drop can be used to estimate the
height blood fell.
blood type.
amount of blood.
direction of blood letting.
Blood typing is a way to positively identify someone from a crime scene.
True
False
Which blood type is known as the universal recipient?
AB
B
O
A
Which of the following is not a major component of blood in humans?
Epithelial cells
Red blood cells
White blood cells
Plasma
Platelets
What is the purpose of presumptive testing?
Find out who the blood belongs to.
Find out the blood type of the blood sample.
Find out if a substance may be or is not blood.
Make the cotton swabs turn pretty colors.
The proteins found on the surface of RBCs that allow us to type blood as A, B, O or AB are called
Rh factors
Antigens
Antibodies
Aggluntates
Which blood type has Type B antibodies? CHECK ALL THAT APPLY
A
B
O
AB
If a person’s blood is exposed to anti-B serum and it clumps, but does not clump when exposed to anti-A serum, then the blood is
A
B
AB
O
This blood type has no antigens on its surface.
O Negative
B Positive
AB Positive
A Negative
True or False: Blood typing evidence is used to eliminate an individual or class of people.
True
False
Luminol is a chemical used to...
Illuminate or glow if blood is present
Detect if the blood is from a human or not
Determine the blood type of an individual
Preform a White Blood Cell count
Luminol is a chemical used to...
Illuminate or glow if blood is present
Detect if the blood is from a human or not
Determine the blood type of an individual
Preform a White Blood Cell count
Investigators can individualize blood evidence by:
identifying the DNA from the nucleus of white blood cells
identifying the DNA from the nucleus of red blood cells
identifying the DNA from the nucleus of platelets
identifying the DNA from the nucleus of the serum
The shape of a blood droplet depends on:
all of the answers are correct
height
angle
type of surface
The shape of a blood droplet depends on:
all of the answers are correct
height
angle
type of surface
DNA looks like:
a double helix
a single strand
a triple helix
a circle
Which pairing of bases is correct in a DNA molecule?
adenine and thymine
cytosine and thymine
guanine and thymine
adenine and guanine
Mitochondria are found within the cell’s nucleus.
True
False
The heavier, denser molecules move the furthest on an electrophoresis gel.
True
False
Luminol would be considered a presumptive test for blood.
True
False
Blood typing cannot be used on dried blood.
True
False
A person without A or B antigens on their red blood cells has blood type:
A
B
AB
O
The blood type that contains no A or B antibodies is:
A
B
AB
O
A person with O blood could give blood to:
A
B
AB
O
All other blood types
The clumping of red blood cells is called:
agglutination
antibodies
metabolism
a blood factor
DNA can have forensic value even if it is decades old.
true
false
Which organelle (part) of the cell is DNA usually found in?
cell membrane
vacuole
chloroplast
nucleus
Replicate the following strand of DNA. (Hint: Match the nucleotide pairs. You did this when you created your DNA molecule.)
AATCATGGA
AATCATGGA
TTAGTACCT
UUAGUACCU
GGATAUCUA
All living things have DNA.
True
False
DNA can place a person at a crime scene, even if they claim they have never been there.
True
False
Which of the following statements are true about DNA. CHECK ALL THAT APPLY!
DNA contains genetic information.
The order and sequence of adenine, thymine, guanine and cytosine determine an organism's genetic code.
All living things have DNA.
DNA is found on chromosomes located in the nucleus of cells.
There is a standard at either end of the gel. The 2nd column from the left is the crime scene DNA. Counting from the Left which suspect can we place at the crime scene? All remaining columns are suspects, no victim DNA here.
1 & 9
1, 3, 5, 7
Just 9
None of them
