Genetics is the study of
A) inheritance of characteristics.
B) the effect of the environment on health.
C) sperm and eggs.
D) DNA.
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Question 2) Exposure to secondhand smoke can cause or increase risk of
A) sarcoidosis, multiple sclerosis, and vasculitis
B) high altitude sickness and sleep apnea.
C) heart disease, lung cancer, and low birth weight.
D) pneumonia and tuberculosis.
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Question 3) A complete protein has adequate amounts of the essential amino acids.
Indicate whether the statement is true or false
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Question 4) At the renal plasma threshold
A) the urine has too little glucose.
B) blood volume is so great that nephrons cannot keep up.
C) more glucose is in the blood, limiting the amount of glucose that can be reabsorbed.
D) more glucose is in the filtrate than active transport can handle.
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Question 5) Labor is regulated by
A) prolactin. B) negative feedback control.
C) estrogen. D) positive feedback control.
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Question 6) Undifferentiated spermatogenic cells are called
A) primary spermatocytes. B) spermatids.
C) secondary spermatocytes. D) spermatogonia.
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Question 7) Changes in the respiratory system that accompany aging are
A) slowed swallowing reflex. B) thickened mucus.
C) all of the above. D) cilia become less active or vanish.
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Question 8) Cholesterol is synthesized chiefly in the liver.
Indicate whether the statement is true or false
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Question 9) Shigatoxin is associated with
A) hemolytic uremic syndrome. B) edema.
C) urinary tract infection. D) endemic nephropathy.
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Question 10) The respiratory center is most likely to increase the breathing rate if the
A) concentration of carbonic acid is decreasing.
B) pH of body fluids is increasing.
C) pH of body fluids is decreasing.
D) concentration of sodium bicarbonate is increasing.
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