Year 11 ATAR Human Biology Osmosis Investigation (More Accurate)

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Hypothesis

“If the concentration of the external (glucose) solution is increased, the dialysis tubing filled with distilled water (or lower concentration solution) will lose more mass due to osmosis (net movement of water out of the tubing). Conversely, lower external concentrations will lead to a gain in mass of the dialysis tubing.”

In other words, you hypothesize that water will move from a region of higher water potential (lower solute concentration) to a region of lower water potential (higher solute concentration), causing measurable changes in mass.

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