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PBS Midterm SY23-24

Total questions: 65

Worksheet time: 1hrs 3mins

Name
Class
Date
1.

Label the parts of hair

a)

Follicle

b)

Medulla

c)

Cortex

d)

Cuticle

1
2
3
1)
2)
3)
2.

Identify the ridge pattern for the following images:

a)

1.

Loop

b)

2.

Whorl

c)

3.

Arch

3.

This laboratory procedure is known as

a)

CLONING

b)

gel electrophoresis

c)

chromatography

d)

use of a dichotomous key

4.

In preparation for an electrophoresis procedure, enzymes are added to DNA in order to

a)

convert the DNA into gel

b)

cut the DNA into fragments

c)

change the color of the DNA

d)

produce longer sections of DNA

5.
Based on these results whose blood was found in the blood stain at the crime scene?
a)
Bob
b)
Sue
c)
John
d)
Lisa
6.
In gel electrophoresis, the largest DNA fragment will appear
a)
closest to the starting wells
b)
farthest from the starting wells
c)
three quarters away from the starting wells
d)
it depends on how many fragments there are
7.

If a strand of DNA has 39% Cytosine, it has...

a)

39% Adenine

b)

39% Guanine

c)

39% Thymine

d)

39% combined Cytosine and Guanine

8.

Contains hemoglobin, supplies body with oxygen

a)

Plasma

b)

Platelet

c)

White Blood Cell

d)

Red Blood Cell

9.
This system includes the skin, hair, and nails.
a)

Integumentary

b)

Nervous

c)

Skeletal

d)

Muscular

e)

Respiratory

10.
This system secretes chemical messages (hormones) to different parts of the body.
a)

Excretory

b)

Endocrine

c)

Digestive

d)

Immune

e)

Lymphatic

11.

Used on small, circular crime scenes. Investigators start from a critical point and travel outward along many straight lines from this point.

a)

Link method

b)

Wheel method

c)

Line method

d)

Spiral method

12.

 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)

Examine and observe the crime scene

b)

Sketch a diagram of the crime scene

c)

Interview witnesses to establish a theory of the case.

d)

Mark and document evidence of the crime scene

13.

What is the function (job) of the white blood cells?

a)

To transport oxygen around the body.

b)

To carry dissolved sugars.

c)

To clot and cover wounds like cuts and grazes.

d)

To release antibodies to help destroy infections.

14.

Type A blood contains:

a)

A antibodies and B antigens.

b)

both A and B antigens.

c)

A antigens and B antibodies.

d)

both A and B antibodies.

15.

O blood type is also known as the

a)

universal acceptor

b)

universal donor

c)

lease effective blood type

d)

the positive protein

16.

What blood spatter pattern is seen in the picture?

a)

Transfer/Contact

b)

Passive

c)

Projected

d)

Velocity

17.

As blood drops from increasing heights, what happens to the size of the blood stain?

a)

Gets larger.

b)

Gets smaller.

c)

Stays the same size.

d)

Change shape

18.

Maya designed an experiment to answer the following question:

How does the amount of water given to a lima

bean seed affect how tall it grows?

In this experiment, what is the independent variable?

a)

The amount of water

b)

The kind of plant

c)

The type of soil

d)

The amount of sunlight it gets

e)

How tall it grows

19.
The parts of the experiment that must be kept the same.
a)

Constants/ Controlled Variables

b)

Independent Variable

c)

Dependent Variable

d)

Conclusion

e)

Data Table

20.

When more than one variable in an experiment is changed at a time, the scientist....

a)

cannot accurately measure both variables at the same time.

b)

needs to conduct more trials in order to get conclusive results.

c)

cannot tell which change produced the results.

d)

made a systematic error that needs to be corrected.

21.

The correct title of this graph should be:

a)

Temperature vs, Pressure

b)

Data Collected During Experiment

c)

Pressure vs. Temperature

d)

X vs. Y

e)

Independent Variable vs. Dependent Variable

22.

What does a polygraph measure?

a)

Detects eye movement

b)

Detects lies from physiological responses

c)

Detects the severity of an emotion

d)

Detects differences in brain activity

23.

Detection of sweat

a)

Heart Rate

b)

Skin Conductivity

c)

Blood Pressure

d)

Respiration Rate

24.

Other than ridge patterns, what else do scientists use to identify and match fingerprints?

a)

Minutiae

b)

Medulla

c)

Whorls

d)

Keratin

e)

Cuticle

25.

______ is the number of beats per minute while ______ is the number of breaths per minute.

a)

Respiration Rate, Heart Rate

b)

Heart Rate, Respiration Rate

c)

Respiration Rate, Skin Conductivity

d)

Skin Conductivity, Heart Rate

26.

When completing a polygraph test, _______ data is taken by asking control questions to provide a reference point for all physiological responses during the test.

a)

Baseline

b)

Relevant

c)

Dependent

d)

Independent

27.

The proteins found on the surface of RBCs that allow us to type blood as A, B, O or AB are called

a)

Antigens

b)

Antibodies

c)

Aggluntates

d)

Rh factors

28.

What type of antigens can be found on the surface of RBC's when someone has blood type AB?

a)

A

b)

B

c)

AB

d)

None

29.

The clumping of red blood cells due to the antigen-antibody reaction is called:

a)

A negative control

b)

Hemoglobin

c)

Agglutination

d)

Spatter

e)

Blood Typing

30.

 Type of blood spatter that radiates out from the center in a circular pattern created by impact with significant force is called:

a)

Blood transfer

b)

Radial spatter

c)

Falling droplets

d)

Smearing

e)

Wipe

31.

Which blood type has the A antigen and will agglutinate (clump) when anti-A is added, but not anti-B?

a)

Type A

b)

Type B

c)

Type O

d)

Type AB

e)

Type OB

32.

____________________________________: The different parts of the microscope that can be changed to magnify the image (4X, 10X, and 40X).

a)

Objective lens

b)

Eye piece

c)

Stage

d)

Coarse Adjustment Knob

e)

Fine Adjustment Knob

33.

Which of the following is NOT a step in processing a crime scene?

a)

Interview

b)

Examine

c)

Infer/ Make Assumptions

d)

Photograph

34.

Which crime scene search method is shown in the diagram?

a)

Zone

b)

Link

c)

Line/strip

d)

Wheel/ray

35.

Which crime scene search method is shown in the diagram?

a)

Zone

b)

Link

c)

Wheel

d)

Line

36.
What is the total magnification of a microscope with two lenses when one lens has a magnification of 10x, and the other lens has a magnification of 30x?
a)
15x
b)
30x
c)
40x
d)
300x
37.

When using a microscope you place the specimen slide is placed on the ___

a)

Coarse adjustment knod

b)

Eye piece

c)

Stage

d)

Diaphragm

38.

___________combines the fields of biology and medicine to develop knowledge, interventions, or technology that are of use in healthcare or public health.

a)

Forensic Science

b)

Biomedical Science

c)

Criminal Justice

d)

Government & Politics

39.
A person is found dead by a neighbor.  What career is involved in notifying the police and calling an ambulance?
a)
911 Operator
b)
EMT
c)
Crime Scene Investigator
d)
Medical Examiner
40.
What is the correct order of processing evidence and analysis of a crime scene?
    1-collect evidence
    2-conduct interviews
    3-protect the crime scene
    4-photograph the crime scene
a)
3, 2, 1, 4
b)
3, 4, 1, 2
c)
4, 3, 1, 2
d)
2, 3, 4, 1
41.

Which of the following best describes the shape of the DNA molecule?

a)

Double Helix

b)

Ribbon

c)

Amino Acids

d)

Contains Uracil

42.
What are the three components of a nucleotide?
a)

Sugar, hydrogen, nitrogen base

b)

Sugar, oxygen, nitrogen base

c)

Sugar, phosphate, nitrogen base

d)

Sugar, phosphate, protein

43.

Which of the following nitrogen bases are paired correctly according to Chargaff's Rule?

a)

Adenine + Thymine

b)

Thymine + Uracil

c)

Cytosine + Guanine

d)

Guanine + Adenine

44.
Who is responsible for producing this image?
a)
Francis Crick
b)
James Watson
c)
Rosalind Franklin
d)
Watson and Crick
45.
From what angle was this blood most likely dropped?
a)
90°
b)
70°
c)
30°
d)
10°
e)

45°

46.

Which structure is shown in the image below?

a)

Chromosome

b)

Gene

c)

Nucleotide

d)

Nitrogen Base

e)

Cell

47.

Prokaryotic organisms are?

a)
simple, mostly single-celled organism that lacks a nucleus, or any other membrane-bound organelle.
b)
have a peptidoglycan cell wall and many have polysaccharide capsules.
c)
have a true nucleus, which means the cell's DNA is surrounded by a membrane.
d)
contain membrane-bound organelles, such as the nucleus
48.

I have an x-axis and a y-axis. I help to track changes over time. What type of graph am I?

a)
Circle Graph
b)

Bar Graph

c)
Line Graph
d)

Scatterpot

e)

Histogram

49.

Making sure students know the different types of educational requirements.

Match the following degrees to the length of college needed:

a)

Associate's Degree

1.

2 year college degree

b)

Bachelor's Degree

2.

4 year college or university degree

c)

Master's Degree

3.

1-2 years additional to 4 year degree

d)

Doctorate

4.

2 or more years additional to 4 year degree or 5 year degree

50.

A female's menstruation cycle is a collaboration between which two human body systems?

a)

Reproductive & Integumentary

b)

Reproductive & Endocrine

c)

Endocrine & Excretory

d)

Nervous & Immune

51.

This occurs 2-4 hours after death, where the blood pools due to gravity. The area affected is a bluish-red color.

a)

Rigor mortis

b)

Algor mortis

c)

Livor mortis

d)

Pallor Mortis

e)

Decomposition

52.
The cooling of body temperature after death is:
a)

Algor mortis

b)

Livor mortis

c)

Rigor mortis

d)

Pallor mortis

e)

Decomposition

53.

The process that causes the muscles in the body to stiffen resulting in rigidity after death is called

a)

Algor mortis

b)

Rigor mortis

c)

Livor mortis

d)

Decomposition

e)

Pallor Mortis

54.

What two things is the crime scene sketch missing?

a)

A scale to show size

b)

Legend with time and date

c)

Key showing numbered evidence

d)

Altitude

e)

Temperature

55.
An invisible print that must be developed using powder or chemicals is called
a)
plastic
b)
latent
c)
patent
d)
underdeveloped
56.

Locard's Principle states

a)

every contact leaves trace evidence

b)

every criminal leaves shoe prints

c)

every criminal leaves fingerprints

d)

every criminal will be punished

57.
The following is an example of which two systems working together:
"The small intestine absorbs nutrients from our food and they are carried through the blood to the cells."
a)

Digestive and Cardivascular

b)
Digestive and Respiratory
c)
Digestive and Skeletal
d)
Digestive and Nervous
58.
Fill in the blanks:
"The ________ system allows us to move around, but the _________ system controls our movement."
a)
Skeletal, Nervous
b)
Nervous, Skeletal
c)
Muscular, Skeletal
d)
Nervous, Muscular
59.

You are running and start to feel light-headed. Your brain is receiving messages that your body needs more oxygen. What two systems would give your muscles more oxygen?

a)

Respiratory

b)

Nervous

c)

Cardiovascular

d)

Excretory

e)

Endocrine

60.

Match the following Structures to the correct system

a)

muscular system

1.

tendons, muscles

b)

skeletal system

2.

joints, cartilage

c)

cardiovascular

3.

veins, arteries

d)

digestive

4.

liver, espohagus

e)

nervous

5.

spinal cord

61.

Choose the correct hypothesis for "How will exercising affect your health?"

a)

IF you have better health, THEN you will exercise BECAUSE you feel good.

b)

IF you exercise, THEN you will have better health BECAUSE you are strengthening your muscles and can perform more tasks quicker.

c)

Exercising means you're healthy BECAUSE you are strong and can perform more tasks quicker.

d)

You have better health BECAUSE you exercise more

62.

What type of antigens can be found on the surface of RBC's when someone has blood type O?

a)

A

b)

B

c)

AB

d)

none

63.
Which of these could NOT be used to identify a single suspect in a criminal investigation?
a)
fingerprints
b)
blood type
c)
DNA analysis
d)
all of the above could be used
64.

According to the graph shown here, what is the independent variable of this experiment?

a)

average blood diameter

b)

blood spatter diameter

c)

angle of blood spatter

d)

height of blood dropped

65.
Which is the primary purpose of using restriction enzymes in gel electrophoresis?
a)
It allows the strands of DNA to be cut into various lengths for testing
b)
It restricts the number of base pairs that can be tested in a sample
c)
It makes the testing simpler by moving the strands into the gel faster
d)
It charges the DNA strands

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