Potatoes lose weight when placed in high concentration sucrose solutions because they lose water through osmosis. Osmosis is the process where solvent molecules pass through semi-permeable membranes to equalize the solute concentration on both sides of the membrane.Continue Reading
Living organisms contain water in their cells, including potatoes. Cell membranes are semi-permeable membranes that allow water to pass through readily.
If the cells are placed in a hypertonic solution, they lose water and shrivel. Since water is quite dense, they also lose mass. The water loss is in proportion to the concentration of the solution. This same process is used to create pickles from cucumbers.Learn more about Biology
A lab experiment for osmosis with potatoes involves putting half a potato in plain water and the other half in salt water and observing the difference in appearance. Osmosis is defined as the manner in which molecules pass through a membrane into a more concentrated solution.Full Answer >
The factors that affect the rate of osmosis are temperature, surface area, difference in water potential, pressure, concentration gradient and amount of light. These factors are affected by both the solvent, which is usually water, as well as the equipment used and semipermeable membrane.Full Answer >
Cells control osmosis through selective permeability. Selective permeability is the process whereby only certain molecules can enter or leave the cell membrane.Full Answer >
Biotechnology is important because it may provide the solutions to many major global issues, including world hunger, global warming and pollution, states the Global Agenda Council on Biotechnology. It also provides exciting advances in the medical field, from improving vaccine production to tissue engineering from bio materials.Full Answer >