Which statement is a testable hypothesis? The dog salivating is an example of responding to stimuli. If the dog is given food, then it will be happy. The dogs salivating means it is hungry. If the dog hears the bell, then it will begin to salivate,​

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.