A developing child is most likely to be severely affected if the mother contracts rubella ________

a. during the middle three months of the pregnancy
b. at any point during the pregnancy
c. during the first three months of the pregnancy
d. during the last three months of the pregnancy

Answer: c

Psychology

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Frequency theory proposes that:

a. pitch is determined by the location on the basilar membrane where the message originated. b. pitch is determined by the quality of the sound wave. c. the frequency of the vibrations of the basilar membrane is translated into an equivalent frequency of nerve impulses. d. nerve cells fire in sequence, not individually.

Psychology

For humans, visible light falls within the range of ___ nm

a. 500–570 b. 300–900 c. 400–800 d. 500–1,000

Psychology