In neurons, an action potential begins when a(n) ________ reaches a(n) ________

a. ion pump / membrane
b. electrical charge / cell body
c. membrane potential / threshold level
d. ion concentration / equilibrium


c

Biology & Microbiology

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Temperature at which matter changes from liquid to solid

What will be an ideal response?

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You will always wash your hands and desk before and after labs

a. true b. false

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Which type of reproductive isolation

mechanism is most closely related to allopatric speciation?

a. temporal b. mechanical c. behavioral d. ecological e. genetic

Biology & Microbiology

A black bear population being fragmented into

separate smaller populations by a newly constructed road and the smaller populations prevented from interacting is an example of

a. behavioral isolation. b. temporal isolation. c. ecological isolation. d. mechanical isolation. e. genetic isolation

Biology & Microbiology