When she is not at the bar, Jayla preaches to everyone about the dangers of smoking. However, she does smoke an occasional cigarette when she is at the bar with her friends—although at those times, she feels somewhat frustrated by her own smoking behavior. Jayla is likely experiencing _____ when she smokes.

Ursula is an army veteran who had to have her leg amputated after an explosive device detonated near her. Surprisingly, she still awakens in the middle of the night and feels her missing leg itching, twitching, or even hurting

Ursula is experiencing _________________ sensations. A) amputation syndrome B) gate-control C) phantom limb D) post-traumatic stress disorder

Human beings have ______ chromosomes in normal developmental cases

a) 13 b) 23 c) 32 d) 46