Herbivores are unable to digest ________ and thus rely on the help of specialized bacteria and protozoa living in their digestive tracts
Fill in the blank(s) with correct word
cellulose
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On a regional level, coastal areas generally experience ____ fluctuations in temperature compared to interior regions
of landmasses.
a. smaller daily but larger seasonal b. larger daily but smaller seasonal c. only larger daily d. smaller daily and seasonal e. larger daily and seasonal
According to research done by Baron, Caughey, and Prado, how do prions move within the brain?
a. They use receptors on the surfaces of nerve cells. b. They use vesicles found inside the nerve cells. c. They use tunneling nanotubes. d. They pinch off the nerve cell membrane. e. They stick to the outer surfaces of nerve cells.
The presence of bicarbonate ions in the blood has an important direct effect, aside from the transport of CO2, that involves
A) altering the affinity of hemoglobin for oxygen. B) stimulating the proliferation of alveolar epithelial cells. C) altering the activity of carbonic anhydrase. D) altering the activity of several receptors. E) maintaining acid-base balance.
What was an important factor leading to early diversification of animals?
a. reproduction out of water b. plants that required water for sperm dispersal c. the large expanse of oceans on early Earth d. the emergence of predatory lifestyles favoring those individuals with improved mobility and senses e. development of photosynthesis