Question

The Atlantic salmon lives in the ocean for most of its life. Every year, it returns to freshwater rivers to spawn. Based on what you’ve learned so far about membrane proteins, diffusion, and osmosis, what kind of mechanism allows the salmon cells to adapt to freshwater after leaving saltwater?

Answer 1

The correct answer would be osmosis.

Explanation:

When salmon are in freshwater, they are in the hypertonic condition to their surroundings because of more water outside the body cells than inside. The water moves inside the body cells due to osmosis.

So the salmon suffer from water lodging and low salt in the body. It detected by the hypothalamus and regulate pituitary for secreting the hormone. The hormone results in the transport of ions to occur within the gill cells while they absorb salts across the gill cells which ultimately exchange sodium and chlorine ions against the concentration gradients.

Thus, the correct answer would be osmosis.

Answer 2

By altering function and excreting a huge volume of dilute urine, the salmon’s kidney is able to adapt with the change from saltwater to freshwater.

I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.