The theshold for firing has been reached when the electrical charge of what level of millivolts occurs within a nerve cell?
a. - 10
b. - 50
c. + 100
d. + 10
ANSWER: b
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In an experimental study of the effects of practice on reaction time, practice would be the a. control group
b. independent variable. c. experimental group. d. dependent variable.
Nutrients are moved through the digestive tract by _________ muscle
a. smooth b. cardiac c. striated d. both smooth and striated
Which of the following is a characteristic of experts, as defined by Glaser and Chi (1988)?
A) They individual pieces over the pattern B) They process information at a superficial level C) They are fast D) They do not use STM effectively E) They are slow
Which of the following research findings best describes the phenomenon known as generational dissonance?
A. Research suggests that the distancing that takes place between parents and teenagers in early and middle adolescence is temporary. B. Recent studies have found that stress and conflict are higher in Latino families in which adolescents are relatively more acculturated than their parents. C. One recent study of Black families found that teenagers rated their mothers' behaviors far more negatively than did either the mothers or the researcher. D. Several researchers have demonstrated that family relationships change during puberty, with bickering between adolescents and their parents increasing and closeness between adolescents and their parents diminishing.