In their studies of learning in Aplysia, the primary behavioral focus of Eric Kandel and his colleagues was on
A. feeding.
B. the gill-withdrawal reflex.
C. aggression.
D. sexual behavior.
E. locomotion.
B. the gill-withdrawal reflex.
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The "big bang" refers to
a. an event marking the beginning of the universe. b. the extinction of the dinosaurs. c. the inevitable end of the universe. d. the collision of the first galaxies forming the universe as it is today. e. the inevitable death of large stars.
A common respiratory problem in the elderly or morbidly obese is
a. asthma. b. sleep apnea. c. bronchitis. d. bronchiolitis. e. the common cold.
How do silk moths attract mates?
A) The females flit around the males in an elaborate dance. B) They build elaborate nests. C) The females secrete pheromones to attract males. D) The males sing a high-pitched song to attract the females. E) The males turn bright red as a visual signal.
In comparing mitosis and meiosis, which statement is true?
A. Meiosis I is more like mitosis than is meiosis II. B. Both processes result in four cells. C. Crossing over of homologues occurs in both. D. Chromatids are present only in mitosis. E. Meiosis II resembles mitosis.