In the lab experiment, the semipermeable membrane you will use is dialysis tubing, shown above with a solution inside. Which part of a cell is the dialysis tubing most similar to?

Dialysis tubing is semipermeable: it allows some substances to pass through while blocking others. A cell membrane has the same selective-permeability function, controlling what enters and leaves the cell. The cell wall mainly provides support, while the nucleus and cytoplasm have different roles.

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