In which of the following circumstances would the cell or organism have the greatest need for osmoregulation?
A) an animal connective tissue cell bathed in isotonic body fluid
B) a salmon moving from a river into an ocean
C) a red blood cell surrounded by plasma
D) a plant being grown hydroponically in a watery mixture of designated nutrients

Question

Quizplus · Accepted Answer

Salmon moving from a river (freshwater) into an ocean (saltwater) undergoes a significant change in external osmolarity. This transition requires the salmon to osmoregulate to maintain its internal water and salt balance, as it moves from an environment where it would gain water by osmosis to one where it would lose water.

In Which of the Following Circumstances Would the Cell or Organism