A person sensitive to bee stings may die minutes after a sting due to
a. a collapse of the immune system.
b. a clogging of the capillaries.
c. a release of excessive fluids from the capillary beds.
d. respiratory distress caused by excessive mucus.
e. the extremely sharp rise in blood pressure.
C
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Flatworms have _______ nerve cords that run the length of their bodies, while nemotodes have _____.
a. one, two b. two, three c. two, four d. one, four
Bile helps in the digestion of _____
a. carbohydrates b. fats c. carbohydrates d. proteins e. nucleic acids
The association between actin filaments and the plasma membrane is mediated by all of the following except
a. catenin links to cadherins. b. direct interaction between actin and plasma membrane proteins. c. myosin I-calmodulin linkages. d. talin links to integrins.
When describing the horizontal zonation of a body of water, which term refers to the shoreline area?
A. Limnetic zone B. Benthic zone C. Littoral zone D. Photic zone E. Estuary zone