During an action potential, which of the following occurs?
a. Sodium ions are pumped out of the neuron into the synaptic cleft.
b. The molecular gates open to allow sodium ions into the neuron.
c. The electrical stimulation of the neuron must dip below -70 millivolts and remain so during the action potential.
d. Neurotransmitters enter the axon through gaps in the myelin sheath.
B
You might also like to view...
According to the James-Lange theory, people look to ____ cues to differentiate and label their emotions; according to Schachter, people look to ____ cues to differentiate and label their emotions
a. physiological; situational b. physiological; physiological c. situational; physiological d. situational; situational
If differences between the experimental and control groups are obtained, and when the odds are acceptably low that random assignment hasn't failed in an experiment, the results of the experiment are said to be:
A) applicable to the real world. B) certain. C) statistically significant. D) operationally defined.
Researchers have found that about ______ as many people improve with professional therapy than without it
a. half c. twice b. two-thirds d. three-quarters
Which of the following statements best describes the effects of natural selection?
Species are eliminated, or "selected," one-by-one over thousands of years, and no new species are developed. || New species are naturally developed only every 2,000 years, and all previously existing species die out. || Species change over short periods of time, in spurts, and this change occurs roughly every 1,000 years. || Species change little by little with each generation, and over a long period of time they can develop into new species. || || ||