Which waves are characteristic of Stage 1 or light sleep?
a. beta waves
b. large regular waves with some sleep spindles
c. small irregular waves with some alpha waves
d. delta waves
C
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What experiment did Loewi perform to show that most synapses are chemical?
A. He dissected the brains of patients who had suffered strokes. B. He altered the heart rate in frogs by bathing one heart in the chemical solution he collected from another heart. C. He applied electricity to frogs' legs to animate them. D. He measured the speed at which neurons sent electrical signals and compared that to the speed of electrical current in a wire.
The tendency of the body to maintain a balanced internal state is called __________
a) arousal. b) homeostasis. c) drive. d) biological motives.
Approximately what percent of today's Asian Americans who are 25 years or older have a bachelor's degree or higher?
A) 66 B) 53 C) 38 D) 19
Piaget believed that the _______ fit entirely in a single stage of cognitive development called ___________ stage
a) preschool years; operational b) preschool years; preoperational c) school years; concrete d) school years; operational