As part of an application for a job, Dan is asked to complete some psychological tests, including one in which he responds true-or-false to items such as "I feel sad most of the time" or "I had a good childhood."

The mechanism in the membrane of the axon that actively pumps ions in and out of the

axon is called an ion a. channel. b. transporter. c. stabilizer. d. sheath. e. regulator.

Ambivalence is ____

a. two ends of one extreme b. experiencing two contradictory emotions at once c. an unexpected and undesirable emotional state d. a happy but unexpected surprise