AnswersBiology - SC3209 ICLab: Blood Typing

Lab: Blood Typing — Unit test Answers

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C
Chemical compounds containing digestive enzymes are located on the outside of the skin, and they destroy the cells.
B
Blood vessels are not located in the epidermis, but in the underlying dermal connective tissue.
T
The outer layer of skin is nervous tissue and nervous tissue will not regenerate.
P
Pathogens on the skin secrete toxins that affect the cellular structure, thus destroying the cell.
2
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Which of the following describes a positive feedback loop?

W
When blood sugar is low, the body sends hormones that increase blood sugar.
W
When the body senses that the heart rate is very high, it secretes hormones that decrease the heart rate.
W
When someone is exercising intensely, the body sends hormones that increase oxygen supply for cellular respiration.
W
When a pregnant woman begins to go into labor, the body sends hormones that increase the intensity of the labor contractions.
3

Which component of the cardiovascular system allows the body to function by supplying the cells with oxygen?

r
red blood cells
w
white blood cells
p
platelets
p
plasma
4

Mariana’s teacher has asked her to determine the type of a sample of blood. After doing some tests, she has learned that the red blood cell of the sample has no antigens on it and that the plasma contains both A and B antibodies. What is the type of the blood sample?

A
A+
B
B–
C
AB+
D
O–
5

Why is an angioplasty an incorrect treatment for an aneurysm?

A
Aneurysms cannot be treated.
A
An angioplasty may rupture the blood vessel wall.
A
An angioplasty can have dangerous drug reactions.
A
Aneurysms are treated only with pacemakers.
6

What is the main component of the thin filaments in muscle fibers and is responsible for muscle contraction?

a
actin
m
myosin
A
ATP
D
DNA
7

Keisha cut her hand, which caused a lot of bleeding. Which mechanism did her body use to minimize the blood loss?

B
Blood thickened in the blood vessels near the cut.
B
Blood vessels near the cut dilated.
B
Blood stopped flowing in blood vessels near the cut.
B
Blood vessels near the cut constricted.
8

Consider the photograph. The taller man's condition is due to a malfunction in the pituitary gland, which secretes growth hormone. Damage to which part of the brain may be indicated by this condition?

Question illustration
c
cerebrum
c
cerebellum
h
hypothalamus
t
thalamus
9

What structure(s) in the cardiovascular system connect arteries to veins?

v
valves
h
heart
c
capillaries
l
lymph
10

What is the function of the type of muscle that is pictured below?

Question illustration
s
support and movement of the skeleton
m
movement of food through the digestive system
c
contraction and relaxation of the heart
g
generation and conduction of electrical signals
11

Which part of the neuron below is indicated by the arrow, and what is its function?

Question illustration
T
The myelin sheath releases neurotransmitters so that electrical impulses can be transferred.
T
The myelin sheath protects and transmits electrical impulses faster.
T
The node of Ranvier transmits electrical impulses faster.
T
The node of Ranvier transfers information across a gap.
12

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t
the cafeteria
t
the students
t
the principal
t
the buses
13

What is the function of the valves within the heart and veins?

t
to ensure the production of blood within the body
t
to ensure coordination of the heart cells for pumping blood
t
to ensure that foreign materials do not enter the heart
t
to ensure that blood flows in one direction only
14

When calcium levels in the blood are too low, the body releases a hormone that removes calcium from the bones. A person who suffers from a certain type of thyroid disease will often have low blood calcium and brittle bones because the body is taking the calcium from the bones. The afflicted person will typically see an endocrinologist, who studies hormones, and an orthopedist, who studies bones. What do these two doctors have in common?

T
They both focus on hormone levels.
T
They both focus on bone density.
T
They both focus on calcium levels.
T
They both focus on the thyroid.
15

Many schools require applicants to take a test, such as the SAT or the ACT, as part of the admissions process. These tests determine students’ knowledge in the subject areas of reading, writing, math, and science. They consist of a variety of question types, including multiple choice, short answer, and essay. Which part of the central nervous system helps students remember the correct answers to the questions on these exams?

h
hypothalamus
h
hippocampus
c
cerebellum
b
brain stem
16

Suppose that scientists discover how to grow neurons in the brain tissue of a lizard. What are scientists most likely to do with this discovery?

A
Scientists will work on discovering how neurons grow in other animals.
B
Scientists will discard these findings because lizards and humans belong to different biological classes.
C
Scientists will discard their previous work on neurons and focus on this new line of study.
D
Scientists will apply this discovery in their work to grow neurons in human brain injury cases.
17

Look at the two images of cells.Which of the following statements best describes what can be seen in the images?

Question illustration
A
Image A represents a peptide hormone that interacts with a receptor, and image B represents a steroid hormone that interacts with the cell’s DNA.
B
Image A represents a steroid hormone that interacts with the cell’s DNA, and image B represents a peptide hormone that interacts with a receptor.
C
Image A represents an endocrine hormone that interacts with a receptor, and image B represents an exocrine hormone that interacts with the cell’s DNA.
D
Image A represents an exocrine hormone that interacts with the cell’s DNA, and image B represents an endocrine hormone that interacts with a receptor.
18

Gunther touched a hot object and received a minor burn. How did the skeletal system help prevent further damage?

T
The skeletal system helped him move his hand away from the hot object.
T
The skeletal system made red blood cells to heal the injury.
T
The skeletal system helped him sense that the object was hot.
T
The skeletal system protected the nervous system so pain sensations could not be felt when he touched the hot object.
19

Yolanda pricked her finger on a sharp object. Which type of neuron allowed her body to cause the movement that removed her hand from the sharp object?

A
interneuron
B
relay
C
sensory
D
motor
20

Which is the largest gland in the body?

A
salivary gland
B
pancreas
C
lacrimal gland
D
liver

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