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7th Grade Science Unit Test 4 Review Part III
Test Description: Part III Unit Test 4 Review
Instructions: Answer all questions to get your test result.
1) The nervous system helps the body maintain homeostasis by
A
giving it the blood that it needs
B
regulating and controlling the rest of the human body
C
providing nutrients to the rest of the body
D
breathing in oxygen through the nose
2) Which of the following is where blood cells are made
A
glands
B
tissue
C
bone marrow
D
nervous system
3) While hiking on Mt. Rainier, Deepak found that he had to take deeper breaths as he climbed higher. Which reason explains why deeper breaths were needed?
A
As Deepak climbed higher, carbon dioxide concentrations increased
B
oxygen molecules in the air are spread farther apart as altitude increases
C
the hearts beat slower at higher altitudes than at lower altitudes
D
As Deepak climbed higher a decrease in air pessure made his lungs smaller
4) The central nervous system consists of our
A
brain and spinal cord
B
brain and heart
C
spinal cord and heart
D
brain and lungs
5) After dislocating his left elbow, Mr. Harvey had to do which of the following before he could move his elbow like normal?
A
Score the most points and become a legend at least in his own mind in the staff vs. student basketball game
B
allow time for the healing of soft tissues that support his elbow's movement
C
fight and defeat the bear attacked him and caused his elbow's dislocation
D
go to the gym and lift weights to rebuild his Herculean physique
6) One function of the human endoskeleton is to
A
produce lactic acid
B
produce blood cells
C
transmit impulses
D
store nitrogenous wastes
7) The body cells of most multicellular animals are not in direct contact with the external environment. These cells are supplied with material from the environment by
A
a central nervous system
B
hydrolytic enzymes
C
a circulatory system
D
sense receptors
8) In humans, gas exchange and gas transport occur as a result of the functioning of a system of
A
ganglia
B
lungs and blood vessels
C
setae
D
phloem tubes
9) In humans, carbon dioxide that is excreted passes from the blood directly into the
A
alveoli
B
trachea
C
kidneys
D
liver
10) In humans, which of the following is produced within certain bones
A
red blood cells
B
bile
C
striated muscle cells
D
urea
*select an answer for all questions
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