If a human red blood cell takes the shortest possible route from the right ventricle to the right atrium, then it must travel through this number of capillary beds.
A. one
B. two
C. three
D. four
E. five
B. two
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Which statement is correct regarding microbial growth on food at refrigeration temperatures?
A. The absence of light in the refrigerator greatly reduces the growth of most microbial pathogens. B. There is no growth of microbes in food in the refrigerator; the cold temperature kills or inactivates microbial cells. C. Most food does not have enough oxygen content for microorganisms to thrive. D. The growth of microbes in food depends on their optimal growth temperature; some grow slowly and others faster.
Which of the following is not true of tropical communities?
a. they occur at the equator b. they receive more intense sunlight c. they have a longer growing season d. they receive less rainfall than temperate communities e. they have been established for a longer period of time
A patient has a tumor that causes her to secrete an excess amount of antidiuretic hormone (ADH). You would expect that the excessive level of ADH will ultimately cause ________
A) decreased blood pressure B) increased ventilation rate C) increased blood pressure D) an increase in urine volume
ALL of these respiratory pathogens require person-to-person propagation EXCEPT
a. Legionella pneumophila. b. Streptococcus spp. c. influenza virus. d. both Streptococcus spp. and influenza virus.