Cell Membrane Transport
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What type of transport do ionophores mediate?
What molecules occur in higher concentrations outside the cell?
Na+, Cl-, HCO3-, glucose, Ca++
What molecules occur in higher concentrations inside the cell?
forms a hydrophobic exterior coating on a naturally hydrophilic molecule and makes it lipid soluble
mobile ion carrier
form ion-permeable channels in membrane and enable otherwise non-soluble hydrophilic molecule soluble
an example of a channel former
an example of a mobile ion carrier
What limits the maximum rate of facilitated diffusion?
vmax of the carrier protein
Most common example of primary active transport
Do symporters use ATP?
Osmotic pressure is attributed to...?
osmolarity of the solution
-similar to facilitated diffusion
- rate limited by vmax of the transporters
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