Which of the following tastes causes babies to purse their lips and wrinkle their nose?
A) sweet
B) sour
C) bitter
D) salty
B) sour. With a sour taste, they purse their lips and wrinkle their noses.
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Which of the following statements is true about donor insemination and in vitro fertilization?
A) In vitro infants are less securely attached to their parents than naturally conceived infants. B) Sperm donors are always screened for genetic or sexually transmitted diseases. C) In vitro babies are at no greater risk for birth defects than naturally conceived infants. D) There is a higher rate of low birth weight among in vitro babies than naturally conceived infants.
In the study of handedness and hemispheric speech lateralization, what measure was used to determine hemispheric dominance?
A) changes in cerebral blood flow B) accumulation of radioactive 2-DG in neurons C) PET scans of brain activity D) MRI scans of brain activity E) EEG studies of brain activity