What is the likely outcome if you were able to force water through fish gills in the opposite direction to how it normally flows over the gills?
A) There would be no effect, and maximal oxygenation of blood would still occur.
B) The movement of carbon dioxide from the blood into the water would increase.
C) The direction of blood flow would reverse through the gills to compensate for the reversed direction of water flow.
D) Gas exchange would be inhibited and movement of oxygen into the blood would cease.
E) The blood's oxygen concentration would not be able to exceed 50%.
Correct Answer:
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