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Fråga		Svar
What was the aim of the osmosis potato practical? börja lära sig		To investigate the effect of different concentrations of sugar / salt solutions on the mass of potato tissue.
Why is a cork borer used? börja lära sig		To cut potato cylinders of the same size.
Why must the potato cores be the same size? börja lära sig		To make the test fair and results reliable.
Why is paper towel used in the experiment? börja lära sig		To remove excess liquid before measuring mass.
What is the control in this experiment? börja lära sig		Potato core placed in distilled water.
What happens to the potato cells in distilled water? börja lära sig		They gain mass because water enters the cells by osmosis.
What happens to potato cells in concentrated sucrose solution? börja lära sig		They lose mass because the water leaves the cells by osmosis.
What equipment is used to measure potato mass? börja lära sig		A top-pan balance accurate to at least 0.01g.
How do you calculate percentage change in mass? börja lära sig		Percentage change=final mass - initial mass / initial mass x 100
Why must onion skin be thin? börja lära sig		So light can pass through it and individual cells can be seen

Biology - Osmosis Potato Practical