Which of the following deliver oxygen-poor
blood to the right atrium?
a. vena cavae
b. pulmonary artery
c. pulmonary vein
d. aorta
e. left atrium
A
Biology & Microbiology
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What measures would be taken if a case of smallpox were recognized in a world traveler after the individual had debarked from Heathrow airport in England following several days of sightseeing in London?
What will be an ideal response?
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Herons and egrets are members of the:
a. gulls. b. tubenoses. c. shorebirds. d. pelicans. e. duck family.
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Which of the above would provide a stretchable
attachment between body parts? a. A b. B c. C d. D e. none of the above
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Which chemical is photosensitive and allows plants to "measure" day length?
A) abscisic acid B) malic acid C) cytokinin D) phytochrome
Biology & Microbiology