1) As a person becomes much dehydrated, the concentration of water in her blood reduces. In which direction will water move across the plasma membranes of her blood cells? What will occur to the volume of the cells as a consequence? Explain why is proper hydration significant for multi-cellular organisms?
2) Oops! You were cleaning out the aquariums in the biology lab and you accidentally placed the salt-water fish in the fresh-water tank. What will occur to the cells of these fish?