→ Biology - Osmosis Potato Practical → Rozpocznij Naukę / Ściągnij Fiszki MP3

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

Biology - Osmosis Potato Practical