Freshwater Fish Are in a Hypotonic Environment

question 134

Multiple Choice

Freshwater fish are in a hypotonic environment. How do their gill chloride cells function in this environment?

• A)Freshwater fish have chloride cells that actively move chloride ions out of the gills into the surrounding water, with sodium ions following.
• B)Freshwater fish have chloride cells that actively move chloride ions out of the gills into the surrounding water, with sodium ions moving in the opposite direction.
• C)Freshwater fish have chloride cells that actively move chloride ions into the gills, with sodium ions following.
• D)Freshwater fish have chloride cells that actively move chloride ions into the gills, with sodium ions moving in the opposite direction.

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