Given that caffeine’s pharmacological effects derive from blocking adenosine receptors, we can conclude that adenosine:
a. increase alertness.
b. inhibits motor function.
c. improves memory.
d. causes fatigue.
Ans: D
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Linda sees a sign on a farmer's fence that reads: "Help Me Pick Strawberries. For Every Five Quarts You Pick, Keep One for Yourself." If Linda decides to pick strawberries for this farmer, she would be under a __________ schedule of reinforcement.
A. fixed-interval B. fixed-ratio C. variable-interval D. variable-ratio
Extracellular fluid is rich in a. K+, with small amounts of Na+ and Cl-
b. K+ and Cl-, with very small amounts of Na+. c. Cl-, with very small amounts of K+ and Na+. d. Na+ and Cl-, with small amounts of K+.
____________________ consist of five to ten individuals who hang around together and share activities and confidences, whereas ____________________ are larger groups who may or may not spend much time together and are identified by their activities or attitudes
Fill in the blank(s) with correct word
While watching a steamy sex scene in a movie on TV, Jamison
noticed that his heart rate began to increase as did his blood pressure. He also noticed that his penis was becoming erect. In which phase of the sexual response cycle is Jamison? a) plateau phase b) excitement phase c) resolution phase d) arousal phase