→ Biology - Osmosis Potato Practical → Empezar lección / Descargar tarjetas en MP3

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

Biology - Osmosis Potato Practical