Free Printable PBS Unit 1.1 Test

1.

Which of the following BEST describes the information that should be included on a crime scene sketch?

a)

Title, Name of victim, Time of day

b)

Legend, Key, Scale

c)

Location, Ambient temperature, Key

d)

Legend, Ambient temperature, Scale

2.

A crime scene investigator is called to the scene of a mysterious death. Which of the following is NOT one of the initial steps used to process a crime scene?

a)

Interview witnesses to establish a theory of the case.

b)

Examine the crime scene and mark any evidence

c)

Sketch a diagram of the crime scene

d)

Perform DNA analysis on all biological samples

3.

How do restriction enzymes cut DNA?

a)

Restriction enzymes use lasers to cut DNA into pieces

b)

Restriction enzymes cut DNA at specific base sequences

c)

Restriction enzymes separate fragments of DNA by size

d)

Restriction enzymes do not cut DNA

4.

Choose the phrase below that BEST describes the structure of DNA.

a)

DNA is a double-strand of nucleotides

b)

DNA is made up of a double-strand of proteins twisted into a helix

c)

DNA is a double-strand of nucleotides twisted into a helix

d)

DNA is a single strand of nucleotides

5.

The outermost layer of hair is called the

a)

Keratin

b)

Cortex

c)

Cuticle

d)

Medulla

6.

Blood typing is a way to positively identify someone from a crime scene.

a)

True

b)

False

7.

Investigators collected the following evidence from a crime scene:

Type A blood

Dyed brown hair

Whorl pattern fingerprint

Shoe print Suspect #1 was found to have Type A blood, dyed brown hair, low similarities in fingerprint match and hiking shoes. Which of the following could be used to potentially eliminate suspect #1 as a suspect?

a)

The fingerprint

b)

Blood type A

c)

Dyed brown hair

8.

There are 2 types of nitrogenous bases that make up DNA. What are they called?

a)

acids and bases

b)

nucleotides and amino acids

c)

adenine and cytosine

d)

purines and pyrimidines

9.

This is the most common presumptive blood test done in the lab. This test uses a compound known as phenolphthalein, which reacts with the iron in hemoglobin (It is the test we did)

a)

Leukocrystal violet

b)

Luminol

c)

Kastle-Meyer

d)

ABO Blood test

10.

When blood clumps or forms visible islands in the still liquid plasma, it is called

a)

Binding

b)

Agglutination

c)

Antigenosis

d)

Plasmolysis

11.

18. Which blood type is known as the universal recipient?

a)

AB

b)

B

c)

A

d)

O

12.

A forensic investigator finds a drop of blood at a crime scene. She measures the droplet and finds it is 1.2cm in diameter. Based on the graph below, what can the investigator conclude?

a)

The blood drop fell from 10 cm

b)

The blood drop fell from 30 cm

c)

The blood drop fell from 60 cm

d)

The blood drop fell from 125 cm

13.

What is the correct order of the steps of DNA analysis performed in the lab?

I. PCR

II. Gel electrophoresis

III. DNA extraction

IV. Restriction digestion

a)

I, II, III, IV

b)

II, IV, III, I

c)

IV, III, I, II

d)

III, I, IV, II

14.

Refer to the gel below. It contains DNA samples from a crime scene. To whom does the blood belong?

a)

Bob

b)

Sue

c)

John

d)

Lisa

15.

The following hair sample was recovered in the Anna Garcia case. Who did it belong to?

a)

Anna Garcia

b)

Eric Piedmont

16.

A forensics investigator believes they have found a blood stain at a crime scene. They use the Kastle Meyer test on the stain and it comes back positive. Does this confirm that the stain is in fact blood?

a)

Yes, the Kastle Meyer test is a confirmatory test for blood.

b)

No, the Kastle Meyer test is a presumptive test for blood. Further testing is needed

c)

No, the Kastle Meyer test does not test for the presence of blood.

d)

Yes, the Kastle Meyer test is the ONLY way to be sure it is blood

17.

A sequence of DNA is found to be 15% Cytosine. How much Thymine is present in this sample of DNA?

a)

15%

b)

30%

c)

70%

d)

35%

18.

A sequence of DNA is found to be 15% Cytosine. How much Guanine is present in this sample of DNA?

a)

15%

b)

30%

c)

70%

d)

35%

19.

A student performed a gel electrophoresis experiment. The results are represented in the diagram below. Compared to the fragments at the top of the gel, the fragments at the lower end are ________________.

a)

Larger and move faster

b)

Larger and move slower

c)

Smaller and move faster

d)

Smaller and move slower

20.

All of the following should be avoided when using a micropipette EXCEPT

a)

Turning the micropipette upside down when there is liquid in the tip

b)

Leaving the tip box open when not in use

c)

Cranking the micropipette out of its volume range

d)

Changing the tip after every sample

21.

The diameter of a blood drop can be used to estimate the

a)

a height from which the drop fell

b)

blood type

c)

weapon used

d)

amount of blood lost

22.

Polygraphs measure what...

a)

heart rate

b)

respiration rate

c)

skin conductivity

d)

all of the above

23.

When telling a lie your Heart rate will...

a)

decrease

b)

increase

c)

stay the same

24.

Where can we gather digital evidence from?

a)

Social Media accounts

b)

cell phones

c)

emails

d)

all of the above

25.

What can be determined from digital evidence? (Check all that apply)

a)

Timeline of events

b)

Interactions with Others

c)

Motive

d)

Health Conditions

e)

Cause of Death

26.

Match the lab technique with the definition

a)

PCR

1.

A lab technique for amplifying DNA

b)

Restriction digestion

2.

Cutting DNA molecules into smaller piece

c)

Gel electrophoresis

3.

The separation of nucleic acids by size

27.

Match the following terms with the correct letter in the diagram

a)

Phosphate

1.

Item Z

b)

Deoxyribose sugar

2.

Item Y

c)

Purine

3.

Item W (double-ring structure)

d)

Pyrimidine

4.

Item X (single-ring structure)

28.

Label the fingerprint pattern types.

a)

loop

b)

whorl

c)

arch

1

2

3

1)

2)

3)

29.

Match the terms with their definition

a)

Erythrocyte

1.

Red blood cell responsible for oxygen transport

b)

Leukocyte

2.

White blood cell involved in immune response

c)

Thrombocyte

3.

Platelet involved in blood clotting

d)

Plasma

4.

Liquid component of blood

30.

Which suspect is linked to the crime scene by this DNA analysis

a)

Suspect A

b)

Suspect C

c)

Suspect D

d)

Suspect B

31.

Which of the following is NOT a component of a nucleotide in DNA?

a)

Nitrogenous base

b)

Amino acid

c)

Deoxyribose sugar

d)

Phosphate group

32.

What base matches with Adenine in DNA?

a)

Adenine

b)

Thymine

c)

Cytosine

d)

Guanine

PBS Unit 1.1 Test

Total questions: 32

Worksheet time: 2hrs 28mins

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