A man was viciously beaten three months ago and is suffering from PTSD. Which of the following symptoms is he LEAST likely to develop?
A. Nightmares and sleep disturbances
B. Withdrawal from personal relationships
C. Manic and depressive episodes
D. Anxiety and loss of control
Answer: C. Manic and depressive episodes
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Phage-encoded proteins are
A. coded for by host DNA. B. coded for by phage DNA. C. proteins normally present in the uninfected cell. D. early proteins. E. coded for by phage DNA AND early proteins.
Which of these structures is derived from an ancestral air-breathing lung in ray-finned fishes and is
used to increase buoyancy?
a. swim bladder b. spiral valve c. operculum d. atrium e. lateral-line system
A procedure using high-energy sound waves to blast kidney stones into fragments is
a. galvanic therapy. b. diathermy. c. lithotripsy d. dialysis. e. cauterization.
Since all action potentials are identical, the intensity of a sensation depends on:
a. whether a myelinated or unmyelinated neuron has been stimulated. b. the duration of the stimulation. c. whether the neuron stimulated is a pre- or postsynaptic neuron. d. the total number of neurons stimulated and the frequency of their discharge. e. the presence of an EPSP or IPSP, which allows for a graded response