Isaiah, a 3-year-old, has a birth defect. His speech and language capabilities are poorer than those of other children of his age. He started walking only after his third birthday. Doctors have diagnosed that he has minor mental retardation and have suggested that he be given educational and behavioral therapy. Isaiah is likely to have:
A. fragile X syndrome.
B. Turner syndrome.
C. XYY syndrome.
D. XXX syndrome.
Answer: A
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Presynaptic neurons can release multiple neurotransmitters at different times through the process of ______, in which vesicles containing different neurotransmitters have different levels of sensitivity to calcium.
A. corelease B. reuptake C. cotransmission D. autoreceptors
The 2-year-old brain weighs about 75 percent of its adult weight
Indicate whether this statement is true or false.
There is no conclusive evidence that athletes live shorter lives than nonathletes even though their bodies burn more energy when they are resting. This is most likely evidence against which of the following theories of aging?
A. Endocrine theory B. The rate-of-living theory C. Immunological theory D. The free radical theory
Explicit bias is defined as favoring or disfavoring a group _____________
Fill in the blank(s) with the appropriate word(s)