____ is a cell engulfing large solid materials, and ____ is a cell engulfing materials dissolved in solution.
A. Endocytosis; exocytosis
B. Exocytosis; endocytosis
C. Phagocytosis; pinocytosis
D. Pinocytosis; phagocytosis
C. Phagocytosis; pinocytosis
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Which one of the following marine ecosystems would be expected to have the lowest species diversity and primary production per unit area?
A. oligotrophic oceans B. upwelling regions of ocean C. coral reefs D. estuaries E. intertidal zone
The _____________ bacterial group contains organisms that normally inhabit the intestinal tracts of humans (depending on diet), and can additionally break down cellulose
A. Bacteroidetes B. Firmicutes C. Heliobacteria D. Gram-positive E. Proteobacteria
Conversion of Vitamin D by the kidneys to an active form is an example of the urinary system's
homeostatic interaction with which system? a. skeletal b. cardiovascular c. digestive d. endocrine e. muscular
Which of the following is responsible for changes in airway resistance that occur in a single breath?
A) passive forces exerted on the airways B) contractility of smooth muscle cells C) sensitivity of smooth muscle cells to allergens D) autonomic nervous system E) surrounding atmospheric pressure