Which of the following statements regarding fishes that live in f...

Question

Which of the following statements regarding fishes that live in fresh water is/are correct? Select True or False for each statement.
T/F Water moves across the gills via osmosis until equilibrium is established, at which time the water molecules stop moving.
T/F They lose water to their environment primarily through the gills. They replace this water by drinking.
T/F Water enters epithelial cells in their gills via osmosis. Electrolytes leave the same cells via diffusion.
T/F They have specialized epithelia that actively pump electrolytes from the environment into the blood.

Accepted Answer

Hey everyone, let's take a look at this question together, A fish can encounter various Osma regulatory problems in different environments, given the following issues, select the option that correctly describes the asthma regulatory problems among freshwater fish. So we're looking for which of the following have to deal with some problems that freshwater fish might go through. So let's recall what we know about fresh water and some of the problems that the freshwater fish might undergo, especially Osma regulatory problems. So when we're talking about fresh water, we know that fresh water is something called hipaa tonic, which means that the concentration of salt within the freshwater is lower than that of the fish. So hipaa tonic has a low salt concentration. And so because of this it also has a high water potential because of that lower concentration of salt. The water is going to leave the cells because of osmosis. We know, so the osmo of Osma regulatory is osmosis which is high the low concentration. And we know that the freshwater is hipaa tonic and has the low salt concentration. So it has a high water potential. And because of this, the water enters the cells of the fish. So we get something called osmotic blooding which occurs when the water enters the cells of the fish. And they kind of fill up with that water. And so we see here answer our has osmotic flooding of cells. So that's a possible option. And then we also know that because it's going from that high concentration to that low concentration, the cells of the fish are losing the salt. So they are gaining that water and they're losing the salt. So the loss of salt or S. Is also a possible option. So the only ones that are encompassing R. And S. Is answer choice C. Because as we can see from the other two options P loss of water. We know that the cells are gaining water here because of that osmotic flooding and then the salt build up within the body we know is also incorrect because they are losing salt due to osmosis and the concentration of salt found within the freshwater. So answer choice C. R. And S. Is the only one that fit what we're looking for. I hope you found this video to be helpful. Thank you and goodbye.

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