The Atlantic cod is a common fish of the Atlantic Ocean that must drink seawater to meet its water needs. Explain how active transport helps the Atlantic cod maintain homeostasis with regard to the balance of sodium and chlorine ions, which are abundant in seawater.

Active transport is the movement of molecules from an area of lower concentration to an area of higher concentration against the concentration gradient.

The Atlantic cod would drink seawater to meet its water needs. But as this water will contain excess amounts of sodium and chlorine ions, the Atlantic cod will use the mechanism of active transport to move the sodium and chlorine atoms from its body. Due to active transport,the excess salt atoms will pass on again into the water. Unlike diffusion, energy is used for the process of active transport to occur.

michell96 michell96 · Answer 2 · 2021-10-04T17:32:49+02:00

Atlantic cod uses active transport to regulate its internal levels of sodium and chloride ions through ATP.

Active transport is a process in which molecules move across a cell membrane, this always occurs:

from a region of low concentration
to a region of high concentration.

Active transport uses energy (ATP ) from cells to move them against a gradient, polar repulsion, or some other type of resistance.

According to the above, the Atlantic Cod uses ATP (energy) to carry out the active transport process of the cells to release sodium and chlorine ions from its body and stay only with the water resource.

This is important because it is the best way to maintain a proper balance of these ions, which are needed only in specific amounts.

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