51. ADH is a hormone secreted by the kidneys that reduces the amount of water excreted in the urine. ADH is released in times of dehydration. This is an example of For questions 52-54, refer to the information and graph that follows. Five dialysis bags, made from a semipermeable mem- brane that is impermeable to glucose, were filled with various concentrations of glucose and placed in sepa- rate beakers containing 0.5 M glucose solution. The bags were weighed every 10 minutes and the percent change in mass for each bag was graphed:

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