→ Biology - Osmosis Potato Practical → Start Learning / Download MP3 Flashcards

start learning

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

Biology - Osmosis Potato Practical