Question

15. The southern grasshopper mouse feeds regularly on the Arizona bark scorpion, the most venomous scorpion in the United States. While attempting to capture the scorpion, the mouse usually gets stung multiple times by the scorpion but does not seem to be affected.

What would be the best experiment to conduct to determine if the grasshopper mouse is unique among mouse species in that it does not feel pain when stung by the bark scorpion?

A.	Inject a grasshopper mouse with bark scorpion venom and measure its brain activity in regards to pain reception. Then inject the same grasshopper mouse with other venoms and measure its pain response.
B.	Inject other species of mice with bark scorpion venom and measure their brain activity in regards to pain reception. Compare their pain responses to that of the grasshopper mouse.
C.	Inject a grasshopper mouse with bark scorpion venom and measure its brain activity in regards to pain reception. Then inject the same grasshopper mouse with a benign salt solution and measure its pain response.
D.	Inject other species of mice with bark scorpion venom and measure their brain activity in regards to pain reception. Compare their pain responses to that of the grasshopper mouse and also to their level of pain response when injected with a benign salt solution.

Answer 1

Grasshopper mouse has no effect of venom of bark scorpion and hence it captures and feed on bark scorpion easily.

For detecting that grasshopper mouse is unique, we have to done following experiment:

We have to compare the effect of scorpion' venom in grasshopper t with other mouse by detecting its brain activity in regards to pain reception. This will tell about that grasshopper mouse is unique because if there is large difference in brain activity in response to pain reception tells the unique nature of grasshopper mouse.

That's why right option is D.

Inject other species of mice with bark scorpion venom and measure their brain activity in regards to pain reception. Compare their pain responses to that of the grasshopper mouse and also to their level of pain response when injected with a benign salt solution.