Research on the impact on fetuses as the result of their mothers being exposed to potentially toxic pollutants during the collapse of the World Trade Center during the 9/11 attack found that the combination of the exposure to the toxins and prenatal exposure to _____ resulted in the most harmful effects
a. alcohol
b. cocaine
c. cigarette smoke
d. rubella
c
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A membrane produces an action potential whenever the potential across it reaches what level?
a. the resting potential b. -90 mV c. the threshold of excitation d. the refractory period
Santiago Ramon y Cajal demonstrated that ____.
A. at rest, the neuron has a negative charge inside its membrane B. neurons are separate from one another C. neurons communicate at specialized junctions called synapses D. action potentials follow the all-or-none law
According to research, approximately how many items can be stored in short-term memory?
a) 11 b) 9 c) 7 d) 5
Which of the following statements about mature academics is true?
A) They tend to devote more energy to new discoveries. B) They usually focus on generating unusual products. C) They tend to favor writing memoirs and histories of their field. D) They tend to focus on egocentric concerns.