The nerve gas Sarin kills by blocking acetylcholinesterase, an enzyme that degrades acetylcholine. ...

The nerve gas Sarin kills by blocking
  acetylcholinesterase, an enzyme that degrades
  acetylcholine. What effect does this have?
  a. ACh breakdown stops.
  b. It results in paralysis of skeletal muscles,
  confusion, and slurred speech.
  c. Signals for breathing may be disrupted.
  d. ACh breakdown stops, and signals for breathing
  may be disrupted.
  e. ACh breakdown stops; paralysis of skeletal
  muscles, confusion, headache, and possibly
  death

Question 2

Which of the following is mismatched?
  a. acetylcholine; muscle contraction
  b. endorphin; pain perception
  c. norepinephrine; fight-or-flight response
  d. serotonin; sexual function
  e. GABA; major inhibitor in the brain