When an action potential reaches an axon terminal, calcium
a. rushes into the cell immediately, because this negatively charged ion is attracted to the now-positive environment of the axon terminal
b. rushes out of the axon terminal, because this positively charged ion is repelled by the now-positive environment of the axon terminal.
c. leaves the axon terminal as the action potential recedes, because that is when the calcium channels begin to open.
d. enters the axon terminal as the action potential recedes, primarily due to diffusion.
d
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Concerning the Minnesota reunited twin studies, which of the following aspects of their lives is more likely to be due to genetic similarities than to living in the same historical time period?
a. Both twins like banana splits and cheeseburgers. b. Both twins are Democrats. c. Both twins have a nervous tic, like nail biting. d. Both twins joined the National Guard.
Which of the following physical characteristics of the sound wave corresponds to the psychological dimension of timbre?
a. intensity b. pitch c. frequency d. complexity
Dr. Winstell is interested in studying prejudice, and devises a study in which Caucasian participants are led to believe that they are chatting electronically with an African-American participant
In reality, the participants are responding to another Caucasian participant, and she discloses this information to all participants at the end of the study. Dr. Winstell has used ________ in her study. a. informed consent b. deception c. replication d. cross-cultural research
Which of the following is supposed to be the most successful method of quitting smoking?
A. using the patch or nicotine replacement gum B. attending counseling, along with using nicotine replacement patches or gums C. going cold turkey D. using Zyban or similar drugs