Blood pressure forces fluid through the spaces between cells in nephrons during the process of ____
a. filtration
b. reabsorption
c. secretion
d. elimination
e. excretion
ANSWER: a
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The following quote is taken from a university extension publication for farmers:
"Grain poisoning, also known as grain overload or lactic acidosis, is usually the result of stock consuming large quantities of grain or pellets to which they are unaccustomed. Pasture-fed cows or feedlot cattle not yet adapted to grain may become acutely ill or die after eating only moderate amounts of grain, whereas stock accustomed to diets high in grain content may consume large amounts of grain with little or no effect." What is happening in the digestive system of the livestock that causes grain poisoning and why does a gradual shift in diet avoid this problem? What will be an ideal response?
How did Thomas Malthus's ideas, about human population, affect Darwin's ideas on natural selection?
A. Darwin decided that if human population increased with each successive generation, all animals and plants must reproduce using the same principles. B. Darwin abandoned his idea of natural selection because Malthus' work proved that populations would continually double in number with each generation. C. Thomas Malthus believed that human populations declined when temperature drops, therefore Darwin concluded that all plant species will not reproduce in cold temperatures. D. Mallthus believed that only a fraction of any population will survive and reproduce, Darwin contradicted Malthus's theories and said that all species will continue to survive and reproduce indefinitely. E. Malthus theorized that only a fraction of any human population will survive and reproduce. Darwin's observations during his voyage on the Beagle, supported Malthus' theory.
Temperature ________ the final equilibrium concentration of a diffusing molecule
a. does not alter b. substantially alters c. always alters d. slightly alters
A cat undergoing surgery has a hemorrhage of 20 ml of blood, from a total blood volume of about 220 ml. How would you expect the cat's blood pressure to respond, assuming the hemorrhage is stopped but no other action is taken?
A. Blood pressure may drop temporarily, then normalize. B. Blood pressure will increase for a few hours. C. The blood pressure response would depend on whether the hemorrhage is internal or external. D. Blood pressure may increase temporarily, then normalize. E. Blood pressure will decrease for a few hours.