Some species of sharks, rays, and bony fish sense the movement of prey through the use of:
a. electroreceptors.
b. mechanoreceptors.
c. thermoreceptors.
d. interoceptors.
e. nociceptors
a
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Megadiversity countries are those countries which
A. spend the most money on conservation. B. have the greatest number of species. C. contain the highest genetic diversity. D. have the largest number of endemic plant species. E. have the highest ecosystem diversity.
Which of the following is NOT involved in
self versus nonself recognition? a. complement b. MHC markers c. TCRs d. plasma membranes e. all of these are involved
Which of the following is/are true about natural selection?
A. It assures the survival of every fit individual. B. It acts on genotypes rather than phenotypes. C. It always selects for more complex forms. D. On average, it favors the survival of individuals that have adaptive characteristics. E. All of the answer choices are correct.
Which of the following might cause metabolic acidosis?
a. vomiting b. overuse of antacids c. hormonal disorders d. increased carbon dioxide excretion e. kidney failure causing decreased H+ excretion