Biology Paper 1 required practical quick flash. Morning fire people! You need to keep pushing, keep going, never give up. I’ll be here to help but the rest comes down to how much you want it.

So Osmosis - movement of water from an area of high concentration to low through a partially permeable membrane. Independent variable: different concentrations of sugar (or salt) concentrations (0M, 0.5M, 1.0M, 1.5M, 2M). Dependent variable: the percentage change in mass. Control variables: same volume of solutions, same temperature of solution, same type (species) or potato, covering the beakers to avoid evaporation.

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