Supplying the cell

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Question 40

Easy

Freshwater bony fish live in an environment where the surrounding water has a much higher water potential and a much lower solute concentration than their blood. Specialized exchange cells in their gills regulate the net uptake of water (Substance $W$ ) and essential mineral ions (Substance $I$ ) to maintain homeostatic balance, as shown in the diagram.

Gill Epithelial Cell Exchange

Which transport processes are responsible for the net uptake of Substance $W\,$ and Substance $I\,$ across the gill epithelial membrane?

Substance $W$ is absorbed by facilitated diffusion; Substance $I$ is absorbed by osmosis.

Substance $W$ is absorbed by osmosis; Substance $I$ is absorbed by active transport.

Substance $W$ is absorbed by active transport; Substance $I$ is absorbed by osmosis.

Substance $W$ is absorbed by osmosis; Substance $I$ is absorbed by simple diffusion.

Supplying the cell

Question 40

Supplying the cell Questions

Supplying the cell

Question 40

Supplying the cell Questions