BIOL101A- Lab 7- Diffusion and osmosis

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10 Terms

1
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diffusion

the equalization of the concentration of a substance due to kinetic energy

2
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brownian motion

without stirring the water, when dye is placed in water it will eventually distribute uniformly just due to thermal motion

3
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osmosis

high water pressure to low water pressure

4
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aquaporins

allow the water to pass freely across the membrane

5
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osmotic pressure

force that is generated by water during osmosis in or out the cell

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isoosmotic

the osmotic pressure is the same as that within the cell

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hyposmotic

the osmostic pressure of the fluid surrounding the cell is less than that within the cell

  • environment has more water (less solute) than within the cell

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hyperosmotic

the osmotic pressure of the fluid surrounding a cell is greater than that of the cell contents, the cell

  • environment = more solute than inside the cell

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crenation

shrinking of cells in animals 

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calulation of osmotic pressure

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