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Facilitated diffusion (or facilitated transport) is a process of diffusion, a form of passive transport. Polar molecules and charged ions are dissolved in water but they can not diffuse freely across cell membranes due to the hydrophobic nature of the lipids that make up the lipid bilayers. Only small nonpolar molecules, such as oxygen can easily diffuse across the plasma membrane. All polar molecules should be transported across membranes by proteins that form transmembrane channels. These channels are gated so they can open and close, thus regulating the flow of ions or small polar molecules. Larger molecules are transported by transmembrane carrier proteins, such as permeases that change their conformation as the molecules are carried through, for example glucose or amino acids.
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∙ 15y ago
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What is a protein moves molecules across a membrane?
Facilitated diffusion moves molecules through cell membranes passively.
What type of transport does a small molecule enter a cell with help from a membrane protein additional energy is needed to complete this process?
Facilitated
What does facilitated mane?
facilitated means to make easier, or help with
Are aquaporins involved in osmosis or facilitated diffusion?
facilitated diffusion
Diffusion with a channel protein?
They are the channels by which molecules enter in facilitated diffusion.
Is facilitated diffusion active?
No. Facilitated diffusion is a type of passive transport.
Does glucose enters a cell most rapidly by facilitated diffusion?
it enters most rapidly by facilitated diffusion!!
What is facilitated transport?
Facilitated diffusion (or facilitated transport) is a process of diffusion, a form of passive transport facilitated by transport proteins. Facilitated diffusion is the spontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane transport proteins. The facilitated diffusion may occur either across biological membranes or through aqueous compartments of an organism.
What is the past tense of facilitate?
The past tense of facilitate is facilitated. As in "they facilitated the guests".
Does osmosis or facilitated diffusion require the presence of membrane channels?
facilitated diffusion
How does Facilitated diffusion differs from diffusion in that facilitated diffusion?
Facilitated diffusion uses integrated proteins that act as channels for ions or molecules to pass through.
Is osmosis an example of facilitated diffusion or active transport?
No. Facilitated diffusion is an example of passive transport because it does not require the cell to expend energy.
