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Facilitated diffusion occurs against the osmotic potential/concentration gradient and requires energy at the expense of the ATP hydrolysis. There are several way in which this diffusion could occur in the cells. The first one being the ion exchangers. The ion exchangers are coupled with ATPase activity and they exchange ion(s) across the membrane. The most classical example of ion exchanger is the Na+/K+ ion exchanger and Ca+ ATPase. Other way of the facilitated diffusion in the ion channel. These could be voltage gated channel that open in response to the change in the membrane potential and the other being ligand gated channel that operate under the effect of ligand binding.
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∙ 11y ago
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∙ 8y agoFacilitated diffusion is a process of passive transport where molecules diffuse across membrane. Facilitated diffusion moves with the concentration gradient, it does NOT require energy, but it DOES require carrier molecules.
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∙ 8y agoFacilitated diffusion (also known as facilitated transport or passive-mediated transport) is the process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins.
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∙ 14y agoFacilitated diffusion is when transport proteins are used as a pathway so certain molecules are able to pass through the membrane.
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∙ 15y agoAn integral membrane protein assists a specific substances across the membrane.
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∙ 13y agoAn integral membrane protein assists a specific substance across the membrane.
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∙ 12y agoPassive transport material moves down its concentration gradient (no energy is required).
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∙ 12y agoi dk
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Diffusion with a channel protein?
They are the channels by which molecules enter in facilitated diffusion.
Does glucose enters a cell most rapidly by facilitated diffusion?
it enters most rapidly by facilitated diffusion!!
What is the diffusion of water through the cell membrane is called?
Facilitated Diffusion
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.
A molecule such as glucose must use a protein channel to cross through a cell membrane?
facilitated diffusion
What is the difference between passive diffusion and facilitated diffusion?
Passive diffusion is what naturally happens without any assistance of any sort. Facilitated diffusion requires extra energy from extra sources to happen.
When are transport proteins used?
During facilitated diffusion
Diffusion with a channel protein?
They are the channels by which molecules enter in facilitated diffusion.
What is a protein moves molecules across a membrane?
Facilitated diffusion moves molecules through cell membranes passively.
Are aquaporins involved in osmosis or facilitated diffusion?
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 facilitated diffusion active?
No. Facilitated diffusion is a type of passive transport.
What substance is most commonly transported during facilitated diffusion?
Glucose
Does glucose enters a cell most rapidly by facilitated diffusion?
it enters most rapidly by facilitated diffusion!!
What is the diffusion of water through the cell membrane is called?
Facilitated Diffusion
Does osmosis or facilitated diffusion require the presence of membrane channels?
facilitated diffusion
Three types of passive transport?
There are three forms of passive transport, or the movement of biochemical and other atomic or molecular substances across the cell membranes. They are: osmosis, simple diffusion or facilitated diffusion, and filtration.
