Which of the following best represents the principle of the all-or-none law?
A) The fact that a cell must enter a refractory period after firing to restore its own resources.
B) The fact that a neurotransmitter is either excitatory or inhibitory, but never both.
C) The fact that once a cell reaches its threshold, it must fire and cannot be stopped.
D) The idea that cells in a network must all be excited at the same time for a behavior to occur.
Answer: C) The fact that once a cell reaches its threshold, it must fire and cannot be stopped.
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All motivation to strive and succeed comes from:
a. attempts to compensate for inferiorities. c. organic strengths. b. the attempt to resolve sexual conflicts. d. the superiority complex.
What is the name for a substance that increases, or is believed to increase, a person's sexual desire?
a. Sex stimulant b. Aphrodisiac c. Vasodilator d. Enhancer
Despite being raised in two very different environments, identical twins Tina and Gina receive a similar score on a shyness scale. These results suggest that correlation between genetics and shyness is a. small
b. large. c. inverse. d. polygenetic.
The word should is motivating and strongly recommended
Indicate whether the statement is true or false