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20 Cards in this Set
- Front
- Back
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Diffusion
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diffusion is a type of passive transport.Molecules simply move across membrane from high concentration to low concentration. Stops when evenly distributed
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Passive Transport
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the diffusion of a substance across a biological membrane without any input of energy.
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Osmosis
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the diffusion of water across a selectively permeable membrane
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Isotonic
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a solution having the same solute concentration as another solution.
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Hypotonic
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In comparing two solutions, the one with the lower concentration of solutes
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ENERGY
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The capacity to perform work
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KINITIC ENERGY
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The energy of motion.
Moving objects can perform work by transferring motion to other matter |
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POTENTIAL ENERGY
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The second form of energy.
Stored energy that an oject possesses as a result of its location. |
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CHEMICAL ENERGY
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the potential energy of molecules.
The most important type of energy for living organisms |
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CHEMICAL REACTIONS
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chemical reactions either store or release energy
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CELLULAR RESPIRATION
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chemical process that uses oxygen to convert the chemical energy so the cell can perform work
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EXERGONIC REACTION
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A chemical reaction that releases energy
means "energy out" |
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ENDERGONIC REACTION
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requires a net input of energy. Yields products that are rich in potential energy.
Means "energy in" |
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PASSIVE TRANSPORT
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diffusion across a membrane
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DIFFUSION
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the tendency for particles of any kind to spread out evenly in an available space, moving from concentrated area's to less concentrated area's
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ISOTONIC
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"iso" = same
"tonic" = tension the cell's volume remains constant. The concentration of the cell and it's environment are essentially the same |
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HYPOTONIC
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"hypo" = below
A solution with a higher solute concentration that is lower than that of a cell |
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HYPERTONIC
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"hyper" = above
a solution with a higher solute concentration than the cell |
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PLASMOLYSIS
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A plant cell looses water, shrivels, and the membrane pulls away from the cell wall
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OSMOSIS
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the diffusion of water across a membrane
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