Coordination between vision and touch with the hands appears
a. at the same time as the coordination of vision and touch with the mouth develops.
b. before the coordination of vision and touch with the mouth develops.
c. after the coordination of vision and touch with the mouth develops.
d. shortly after birth but then disappears, only to return again by six months of age.
C
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Discuss cultural differences in alcohol-related problems
Answer:
Glutamate can be toxic to neurons because
a. NMDA receptors allow calcium into a cell, and excess calcium can stimulate harmful levels of enzyme activity. b. NMDA receptors block the movement of calcium into a cell, preventing the release of other neurotransmitters. c. it blocks receptors for other types of neurotransmitters, preventing effective communication between cells. d. its breakdown in the synaptic gap produces harmful free radicals.