Term
DA(change in)C
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d |
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Definition
Rate of NET diffusion of solute across the membrane (Fick's Law)
D = diffusion coefficient
A = surface area of the membrane
DC = concentration difference across the membrane
d = thickness of the membrane |
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Term
DA(change in)C
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d
D = ???
A = surface area of the membrane
DC = concentration difference across the membrane
d = thickness of the membrane |
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Definition
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Term
DA(change in)C
---------------
d
D = diffusion coefficient
A = ???
DC = concentration difference across the membrane
d = thickness of the membrane |
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Definition
| surface area of the membrane |
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Term
DA(change in)C
---------------
d
D = diffusion coefficient
A = surface area of the membrane
(change in)C = ???
d = thickness of the membrane |
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Definition
| concentration difference across the membrane |
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Term
DA(change in)C
---------------
d
D = diffusion coefficient
A = surface area of the membrane
(change in)C = concentration difference across the membrane
d = ??? |
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Definition
| thickness of the membrane |
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Term
| Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. The area of high concentration is called the ??? solution and the area of low concentration is called the intracellular solution. |
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Definition
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Term
| Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. The area of high concentration is called the extracellular solution and the area of low concentration is called the ??? solution. |
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Definition
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Term
| Water, dissolved gases like oxygen O2 , carbon dioxide CO2 and nitric oxide NO and ??? soluble molecules like fatty acids and steroids can diffuse easily across the phospholipid bilayer. |
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Definition
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Term
| Most ??? molecules ( K+, Na+, Ca2+, amino acids, monosaccharides, etc.) cannot pass directly through the phospholipid bilayer. |
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Definition
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Term
| To cross the membrane, most hydrophilic molecules must pass through ??? or be transported across by protein carriers. |
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Definition
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Term
| To cross the membrane, most hydrophilic molecules must pass through protein channels or be transported across by ???. |
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Definition
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Term
| If the hydrophilic molecules are aided through the membrane down their concentration gradient, then we call it ???. |
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Definition
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Term
| carrier proteins are also called ??? |
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Definition
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Term
During facilitated diffusion,
important ??? (glucose, fatty acids, etc.) are typically acted upon in some way as soon as they enter the cell. This keeps the intracellular concentration of the metabolite low, thereby facilitating further uptake. |
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Definition
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Term
Unlike simple diffusion, ???
is mediated by membrane proteins
is highly selective to one (or a few) specific solutes
transport rates are susceptible to acute and chronic regulation |
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Definition
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Term
Unlike simple diffusion, facilitated diffusion…
is mediated by ???
is highly selective to one (or a few) specific solutes
transport rates are susceptible to acute and chronic regulation |
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Definition
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Term
Unlike simple diffusion, facilitated diffusion…
is mediated by membrane proteins
is highly selective to one (or a few) specific ???
transport rates are susceptible to acute and chronic regulation |
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Definition
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Term
Unlike simple diffusion, facilitated diffusion…
is mediated by membrane proteins
is highly selective to one (or a few) specific solutes
transport rates are susceptible to ??? and chronic regulation |
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Definition
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Term
Unlike simple diffusion, facilitated diffusion…
is mediated by membrane proteins
is highly selective to one (or a few) specific solutes
transport rates are susceptible to acute and ??? regulation |
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Definition
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Term
| ??? – changed quickly (usually within minutes) |
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Definition
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Term
| ??? – changed over time (usually days, weeks, months, etc…) |
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Definition
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Term
| ??? form permanent water-filled pores that span the membrane. |
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Definition
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Term
The pore of an ion channel has a selectivity filter so that only particular ions can pass through.
selectivity is based on both ??? and charge |
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Definition
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Term
The pore of an ion channel has a selectivity filter so that only particular ions can pass through.
Selectivity is based on both size and ??? |
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Definition
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