Bio ch.5 sections 5.4, 5.5
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Green olives may be preserved in brine, which is a 20-30% salt solution. How does this method prevent contamination by microorganisms?
Bacteria can't survive in a hypertonic solution because they lose water.
The concentration of solutes in a red blood cell is about 2%. Sucrose cannot pass through the membrane, but water and urea can. Osmosis would cause red blood cells to shrink the most when immersed in which of the following solutions?
a hypertonic sucrose solution
The diffusion of water across a selectively permeable membrane is called _____.
osmosis
