Salts of tetraphenylborate uncouple oxidative phosphorylation. Thus, arsenate is toxic due to its ability to uncouple glycolysis. Saxton and Wells work desperately to uncouple the caboose from the rest of the train. Before he can uncouple the locomotive, Smith climbs aboard the train roof and reaches him. In addition, she discusses apparent anxieties about new reproductive technologies that uncouple sex and reproduction. Trains had to uncouple and ferry across the river. When the broken strand is rebuilt, both strands need to uncouple again.