Wednesday, March 6, 2013


1. Scientists predict that prune fingers may serve a purpose.  What purpose do they suggest prune fingers serve?

Scientists predict that prune fingers may serve a purpose for gripping wet objects.


2. Do you think that the study performed in England was a valid study?  Why or why not?

Yes I think that the study in England was valid because it proved that they grasped the wet objects faster.

3. How would you design an experiment to gather more data to support the suggestion that prune fingers serve a purpose?   (Be sure to include the number of people sampled, the independent and dependent variables and the duration or amount of time for your experiment.)

I could have 30 people and have 15 let them soak their hands in water for 15 minutes then let the other 15 people soak their hands in water for 5 minutes and see which grasps the objects faster. My independent variable is the peoples hands. and the dependent variable is the people, the water, and the objects

4. While scientists are attempting to determine the biological purpose for prune fingers, the article does not discuss why prune fingers happen in the first place.  What biological process allows for the skin on our hands and feet to turn wrinkly when submerged in water for long periods of time?   

The biological standpoint is called osmosis

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