4. After a shipwreck, Sam and Georgie wash up on the shore of adeserted island. Upon their arrival, they both weigh the sameamount, but Sam is taller than average and very athletic, whileGeorgie is shorter than average and considered a little overweight.They quickly find a spring with plenty of fresh water, and sit downto assess their situation. Explain the consequences of each of thefollowing three possible situations in which they may findthemselves (A, B, and C) by answering the questions below.
. Situation A: They find absolutely no food on the island. Whatwould occur metabolically in Sam and Georgie during their firstday? How will their metabolic processes change as the length oftheir starvation increases? Based on the information provided,briefly explain which of the two castaways you would expect to beable to survive the longest without food.
Situation B: They find a steady supply of starchy tubers andsmall crabs. Over time, they both begin to develop skin lesions anda couple of Georgie’s teeth fall out. Give a possible explanationfor the appearance of these symptoms
Situation C: They find a large supply of wild grain, but littleelse. Not long after, they begin to feel weak and tired. Both oftheir bellies begin to swell up and protrude (edema). Give apossible explanation for the appearance of these symptoms. (Hint:what is missing from their diet, and how is normal blood osmolarityprimarily maintained? Why would water be retained in tissues,rather than moved into the blood and thus out via the urinarysystem?)
