The type of movement of molecules that is specific and passive, and which becomes saturated if all of the protein carriers are in use is
A. exocytosis.
B. facilitated diffusion.
C. active transport.
D. endocytosis.
E. osmosis.
B. facilitated diffusion.
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A gene that determines the heaviness of a man's beard is
A) X-linked. B) sex-limited. C) sex-influenced. D) Y-linked.
How are B-cell receptors different from T-cell receptors?
a. B-cell receptors bind antigen, while T-cell receptors do not. b. B-cell receptors have a more complex structure. c. B-cell receptors have a more simple structure. d. B-cell receptors are bound to the cell membrane, while T-cell receptors are bound to the nuclear membrane. e. B-cell receptors stimulate the production of a clone of cells.
Within a community; a dominant species may appropriate a disproportionate share of available
resources, thus __________ other species. a. increasing competition with b. increasing disease transmission with c. undergrazing d. outcompeting e. decreasing disease transmission
Neurons receive, process, and transmit information; however, they cannot function without glia. What are glia, and how do they affect neuronal functioning?
What will be an ideal response?