The movement of substances from regions where their concentration is higher to regions where their concentration is lower is called
A. diffusion.
B. exocytosis.
C. active transport.
D. pinocytosis.
E. pumping.
Answer: A
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The movement of water across a membrane from an area of lower solute concentration to a region of higher solute
concentration is called ____.
a. osmosis only b. active transport only c. endocytosis only d. both diffusion and osmosis e. both osmosis and active transport
According to the life table, the net reproductive rate R0 of this population is _____ and the population is ____________ in size.
A) 0.5; decreasing. B) 0.5; stable. C) 1.0; increasing. D) 1.0; stable. E) 5.0; increasing
In stratified epithelium, such as the epidermis of the skin, cell division occurs
A) in the cells at the base layer only. B) in the surface cell layer only. C) throughout all the layers. D) in the basement membrane only.