When crustaceans such as crabs are kept in seawater with a lower-than-normal pHpH, ATPATP-requiring pumps that maintain ion gradients in the animals' bodies significantly increase their activity in comparison with normal levels. Explain how the increased use of ATPATP by these pumps will most likely affect the ability of the animals to carry out other metabolic reactions such as that catalyzed by PFK

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it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.