Following release from the presynaptic cell, neuropeptides
a. cannot be deactivated by enzymes, whereas small-molecule transmitters diffuse away or are deactivated by reuptake.
b. are deactivated by reuptake, whereas small-molecule transmitters diffuse away or are deactivated by enzymes.
c. can diffuse away from synapses, whereas small-molecule transmitters are deactivated by reuptake
d. and small-molecule transmitters can be deactivated by diffusion, enzymes, or reuptake.
c
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Under what circumstance, if any, can the adult nervous system develop new neurons?
a. Only in a couple of brain areas b. Only after brain damage c. Only after exposure to radiation d. Under no circumstances
Which of the following statements about chromosomes is correct?
a. An embryo's sex is determined by the specific arrangement of all 23 chromosome pairs. b. The egg cell from the mother has a sex chromosome that can be either an X or a Y. c. A female's sex chromosomes are symbolized XX. d. The female egg contains 23 chromosomes, whereas the male sperm contains only 22 chromosomes.
The lowering of the average age of puberty with each generation is known as a ______.
A. generational shift B. pubertal shift C. secular trend D. puberty adjustment
According to Bandura, behavior therapy procedures
A. are most effective when used in conjunction with other types of treatments. B. provide people with a method to change themselves once they have decided to do so. C. are not as effective as behavior therapists claim. D. are no more effective than providing clients with no treatment.