toxin irreversibly binds to the stimulatory G protein which
     _____ toxin irreversibly binds to the stimulatory G protein, which leads to continual production of cyclic AMP and excessive secretion of Water  and electrolytes.  _____ are family of hormones that include prostaglandins, prostacyclins, thromboxanes, and leukotrienes.  _____ occurs when the action of two hormones in conjunction is much greater than the action that would be expected based on the individual actions of the hormones.  _____ toxin blocks the inhibitory G protein from deactivating adenylate cyclase.  Some plasma membrane receptors are coupled to _____ with cleaves _____ into inositol trisphosphate and diacylglycerol. 
  
  Solution
18 ANSWER IS CHOLERA TOXIN
19 ANSWER IS eicosanoid family of lipid molecules
20 ANSWER IS synergistic effect
21 ANSWER IS pertusis toxin
22 some plasma membrane protiens are coupled to G protiens which cleaves Phosphatidylinositol 4,5-bisphosphate into inositol triphosphate and diacylglycerol
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