The pectoral girdle consists of two scapulae and two clavicles.
Indicate whether the statement is true or false
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Question 2) ____________ is the pigment produced by melanocytes.
Fill in the blank(s) with correct word
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Question 3) Smooth muscle lacks
A) transverse tubules and striations. B) actin and myosin.
C) nuclei and mitochondria. D) myofibrils.
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Question 4) The process by which a cell receives and responds to incoming messages is called
__________ transduction.
Fill in the blank(s) with correct word
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Question 5) Tropic hormones
A) function in only one sex.
B) stimulate certain endocrine glands to secrete hormones.
C) block the actions of hormones that endocrine glands secrete.
D) only function in the tropics.
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Question 6) A _______ is a joint formed where a bony socket meets a cone-shaped bony
process.
Fill in the blank(s) with correct word
(
Question 7) The correspondence between a unit of DNA information and an amino acid is the
genetic ______.
Fill in the blank(s) with correct word
(
Question 8) A __________ joins the fibula and tibia.
Fill in the blank(s) with correct word
(
Question 9) A hormone has a half-life of 20 minutes. After an hour, ___ percent of the original
number of molecules remains.
A) 12.5 B) 0 C) 50 D) 25
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Question 10) A drug that functions as an agonist
A) activates a receptor, helping a neurotransmitter bind or triggering an action potential
in some other way.
B) causes great pain if taken in too high a dose.
C) relieves pain.
D) blocks a receptor so that the neurotransmitter cannot bind.
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