15. The southern grasshopper mouse feeds regularly on the Arizona bark scorpion,
ID: 301272 • Letter: 1
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.
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.
Explanation / Answer
The best way to compare the grasshopper mouse non responsiveness to scorpion sting is comparing the pain reception with other species of mouse. The brain will have activity at pain reception at basal levels to many things other than scorpion venom, this is called baseline activity. Then both mice should be injected with salt solution to get a baseline reading.
Then compare the brain activity to pain reception in both species of mouse when given with scorpion venom.
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