Negative after-potential refers to
a. a nerve cell's electrical charge reaching its threshold.
b. a nerve cell reaching a negative trigger point.
c. a nerve cell briefly dropping below its resting level.
d. the axon's readiness for another wave of activity.
C
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What does the following definition describe "The sum of the squared differences between the observed and expected frequencies divided by the expected frequencies"?
What will be an ideal response?
Urban children from technological societies today are experiencing
a. an increase of interest in acquiring biological knowledge. b. a decreased detachment from the biological world. c. an increase in biological knowledge. d. a deterioration of biological knowledge.
What is meant by "brain plasticity?"
a. Brain parts are flexible and can complete a variety of tasks. b. Certain brain areas have very specific functions. c. The brain can sometimes compensate for injuries. d. None of these is accurate.
The onset of menstruation is ________
Fill in the blank with the appropriate word.