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Bio10A:  Functions of systems in organisms

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

Tightly connected cells that are arranged in flat sheets are characteristic of
a.
epithelial tissue.
c.
muscle tissue.
b.
connective tissue.
d.
nerve tissue.
 

 2. 

Smooth muscle
a.
can change the diameter of blood vessels.
b.
moves food through the digestive tract.
c.
is not under conscious control.
d.
All of the above
 
 
bio10a-09_files/i0040000.jpg
 

 3. 

Refer to the illustration above. The structure labeled C is a
a.
nerve.
c.
muscle.
b.
blood vessel.
d.
ligament.
 

 4. 

Bone cells that become embedded within the concentric layers of bone tissue are
a.
osteocytes.
c.
red marrow cells.
b.
periosteal cells.
d.
yellow marrow cells.
 

 5. 

Muscles that function by bending joints, such as the biceps, are categorized as
a.
flexors.
c.
extensors.
b.
abductors.
d.
adductors.
 

 6. 

flexors : bend ::
a.
immovable joints : bend
b.
slightly movable joints : be immovable
c.
extensors : straighten
d.
sutures : move a great deal
 

 7. 

The skin performs all of the following except
a.
protection.
c.
control of body temperature
b.
sensation of heat.
d.
production of gametes.
 

 8. 

Keratin
a.
is a strong, fibrous protein.
c.
is a skin pigment.
b.
fills dead cells in the dermis.
d.
All of the above
 

 9. 

The dermis of the skin is
a.
composed of corneal and basal layers.
c.
the location of melanocytes.
b.
the innermost layer of the skin.
d.
involved in temperature regulation.
 

 10. 

Overexposure to sunlight may cause all of the following except
a.
mutations in the skin cells.
c.
acne.
b.
premature aging of the skin.
d.
skin cancer.
 



 
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