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33 Cards in this Set
- Front
- Back
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Diffusion
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The movement of a substance down its concentration gradient from a more concentrated area to a less concentrated area.
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Concentration Gradient
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A difference in the concentration of a substance over a distance.
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Osmosis
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The movement of water (or another solvent) through a selectively permeable membrane from a solution with a lower concentration of solutes to one with a higher concentration of solutes.
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Turgor
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A cell's swelling against its cells wall caused by the pressure of the cell's contents.
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Isotonic
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Has the same concentration of solute as the cell so water diffuses in and out evenly.
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Hypotonic
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Has a lower concentration of solute than the cell causing water to diffuse into the cell. The cell will swell and burst.
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Hypotonic
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Has a lower concentration of solute than the cell causing water to diffuse into the cell. The cell will swell and burst.
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Hypertonic
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Has a higher concentration of solute than the cell, water diffuses out and the cell shrinks.
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Hypotonic
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Has a lower concentration of solute than the cell causing water to diffuse into the cell. The cell will swell and burst.
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Hypertonic
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Has a higher concentration of solute than the cell, water diffuses out and the cell shrinks.
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Passive Transport
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The diffusion of a substance through a biological membrane.
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Hypotonic
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Has a lower concentration of solute than the cell causing water to diffuse into the cell. The cell will swell and burst.
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Hypertonic
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Has a higher concentration of solute than the cell, water diffuses out and the cell shrinks.
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Passive Transport
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The diffusion of a substance through a biological membrane.
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Active Transport
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The movement of a substance through a biological membrane against a concentration gradient with the help of metabolic energy.
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Hypotonic
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Has a lower concentration of solute than the cell causing water to diffuse into the cell. The cell will swell and burst.
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Hypertonic
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Has a higher concentration of solute than the cell, water diffuses out and the cell shrinks.
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Passive Transport
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The diffusion of a substance through a biological membrane.
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Active Transport
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The movement of a substance through a biological membrane against a concentration gradient with the help of metabolic energy.
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Facilitated Diffusion
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The spontaneous passage of molecules and ions, bound to specific carrier proteins, across a biological membrane down their concentration gradients.
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Hypotonic
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Has a lower concentration of solute than the cell causing water to diffuse into the cell. The cell will swell and burst.
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Hypertonic
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Has a higher concentration of solute than the cell, water diffuses out and the cell shrinks.
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Passive Transport
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The diffusion of a substance through a biological membrane.
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Active Transport
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The movement of a substance through a biological membrane against a concentration gradient with the help of metabolic energy.
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Facilitated Diffusion
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The spontaneous passage of molecules and ions, bound to specific carrier proteins, across a biological membrane down their concentration gradients.
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Endocytosis
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The cellular uptake of materials in which the plasma membrane surrounds and engulfs extra cellular materials.
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Hypotonic
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Has a lower concentration of solute than the cell causing water to diffuse into the cell. The cell will swell and burst.
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Hypertonic
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Has a higher concentration of solute than the cell, water diffuses out and the cell shrinks.
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Passive Transport
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The diffusion of a substance through a biological membrane.
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Active Transport
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The movement of a substance through a biological membrane against a concentration gradient with the help of metabolic energy.
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Facilitated Diffusion
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The spontaneous passage of molecules and ions, bound to specific carrier proteins, across a biological membrane down their concentration gradients.
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Endocytosis
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The cellular uptake of materials in which the plasma membrane surrounds and engulfs extra cellular materials.
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Exocytosis
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The release of macromolecules from a cell by the fusion of vesicles with the plasma membrane.
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