Photoreceptors use __________ and retinal ganglion cells use ___________ in the perception of color.
A. trichromatic coding; opponent-process coding
B. trichromatic coding; trichromatic coding
C. opponent-process coding; trichromatic coding
D. opponent-process coding; opponent-process coding
Answer: A
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How do sensory systems differ for humans versus nonhuman animals??
a. ?Because of a highly developed cerebral cortex, humans have highly diverse sensory systems in comparison to most other animals. b. ?In contrast to contemporary humans, nonhuman animals use their sensory systems to enhance survival. c. ?Industrialization has had a negative effect on the sensory systems of humans; as human sensory systems declined, the sensory systems of other animals became more efficient. d. ?Developed out of natural selection, sensory systems are used in unique ways by individual species (human or nonhuman) and work to maximize the survival of that species.
The correlation between scores on a test of tranquility and age at death is +.60. What could we conclude from this correlation coefficient?
a) People with high tranquility scores live longer. b) Dying at a later age is related to low tranquility scores. c) People who have high tranquility scores tend to die younger. d) People with low tranquility scores die 60 percent sooner than those with high tranquility scores.
Overall, about _____ percent of children's activities fall into the moderate to vigorous category
A) 10 B) 20 C) 40 D) 50
Internal organs are to ___as movement of the body is to___
a. smooth muscles; rough muscles b. smooth muscles; skeletal muscles c. striated muscles; skeletal muscles d. organic muscles; skeletal muscles