AnswersNY-Life Science BiologyTerm 2 HillcrestUnit Test

Unit Test — Unit test Answers

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1
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Which level of organization falls directly after the tissue level when listed in order from least to most complex?

A
organelle
B
cell
C
organ system
D
organ
2
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Which lists the correct order of events in the healing of cuts?

A
red blood cells trapped in fibrin net, net formation by platelets, vessel constriction
B
vessel dilation, platelet plug formation, net formation by red blood cells
C
vessel constriction, platelet plug formation, net formation by fibrin threads
D
platelets trapped in fibrin net, net formation by white blood cells, vessel dilation
3

Why is blood clotting important?

A
It helps to heal cuts.
B
It helps the blood circulate.
C
It helps attack foreign materials.
D
It helps to pump blood.
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

Which organ systems work together to help the body shiver in order to maintain homeostasis?

A
circulatory and respiratory
B
nervous and muscular
C
circulatory and muscular
D
respiratory and nervous
6

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

A
actin
B
myosin
C
ATP
D
DNA
7

Which best describes the top and bottom images of muscle contraction?

Question illustration
A
The top image is in step 2, and the bottom image is in step 1.
B
The top image is in step 1, and the bottom image is in step 3.
C
Both images are in step 1.
D
Both images are in step 3.
8

What is the main function of the central nervous system?

A
process information from stimuli and respond
B
process information from responses and sense stimuli
C
produce stimuli and cause reactions in the body
D
sensing reactions and causing stimuli in the body
9

How is a brain injury classified?

A
as an injury of the peripheral nervous system
B
as an injury of the central nervous system
C
as an injury of the autonomic nervous system
D
as an injury of the somatic nervous system
10

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

A
Blood thickened in the blood vessels near the cut.
B
Blood vessels near the cut dilated.
C
Blood stopped flowing in blood vessels near the cut.
D
Blood vessels near the cut constricted.

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