You are an avid fish collector with a saltwater tank that is the envy of the nei

Question

You are an avid fish collector with a saltwater tank that is the envy of the neighborhood. You order a new fish for your collection, a grouper. However, there is a mix-up at the store and instead you are sent an Oscar (a freshwater fish) named Oscar and your daughter unwittingly dumps him into the tank. Please explain, in terms of tonicity, what will happen to Oscar? Will he be okay? Why or why not? You have a cluster of artificial cells composed of 50% NaCl and 50% water (assume the cell membranes are not permeable to either Na^+ or Cl^-.) Predict what happen to the SHAPE of the cells if you placed them in each of the following scenarios and explain your reasoning: 25% NaCl 50% NaCl 75% NaCl

Explanation / Answer

2) If fresh water fish is placed in hypertonic environment, there will be movement of water from the fish into water due to osmosis. Therefore, the fish will become dehydrated and die in course of time.

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