Apoptosis is a slow version of mitosis.
Indicate whether the statement is true or false
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Question 2) Marjorie takes an anti-anxiety drug so that she can sleep better and remain calm enough
to study effectively. She begins by taking 25 milligrams every evening, but within a
month this dose is no longer helping, so she takes two pills.
After another month this
dosage is no longer effective. This is happening because
A) the number of receptors to which the drug binds on neurons has declined.
B) she has developed tolerance, which means that her liver can no longer metabolize
the drug, so it remains active for too long.
C) the number of receptors to which the drug binds on neurons has increased.
D) her immune system is rejecting the drug.
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Question 3) The right atrium receives blood directly from
A) the pulmonary veins.
B) the superior vena cava, inferior vena cava, and coronary sinus.
C) the superior vena cava, inferior vena cava, and pulmonary veins.
D) the superior vena cava and inferior vena cava only.
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Question 4) A hormone with an effect that lasts for days would have a
A) long half-life. B) no half-life.
C) whole life. D) short half-life.
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Question 5) Aging affects the appearance of the skin, producing wrinkles and sagging due to
decreased collagen and elastin formation.
Indicate whether the statement is true or false
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Question 6) Arthritis is a circulatory problem.
Indicate whether the statement is true or false
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Question 7) The range of human hearing is about
A) 2,000-200,000 vibrations per second.
B) 2-2,000 vibrations per second.
C) 2,000-3,000 vibrations per second.
D) 20-20,000 vibrations per second.
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Question 8) The primary motor area of the brain is in the
A) precentral gyrus of the frontal lobe.
B) postcentral gyrus of the parietal lobe.
C) lateral part of the occipital lobe.
D) posterior sulcus of the temporal lobe.
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Question 9) In a recording of a muscle twitch, the delay between the time a stimulus is applied and
the time the muscle responds is called the
A) refractory period. B) latent period.
C) contraction period. D) relaxation period.
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Question 10) The structure of a lymphatic vessel is most similar to that of a(n)
A) artery. B) arteriole. C) capillary. D) vein.
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