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Carrier proteins in a cell surface (plasma) membrane will carry specific molecules or molecular ions (by facilitated diffusion) through that connot diffuse through the membrane accross a concentration gradient. their are many different types of protein carriers in different cells around the body. in the nephron of a kidney, in the PCT, the cells that line this part of the tubule contain co-transporter proteins that allow facilitated diffusion for both Na+ ions and Glucose to enter at the same time. there are also similar carrier proteins here for Na+ and amino acids. i could keep going but i would be here for a while, they all work differently but if your looking for the mechanism. mostly its by facilitated diffusion, some are just diffusion, actively transported, pumped or osmosis. but you must be specific as to what type of carrier protein is transporting what material.

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13y ago
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Q: What uses carrier proteins to transport molecules across a semi-permeable membrane?
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Related questions

What biomolecule helps transport molecules across the membrane?

proteins


Why must transport proteins be peripheral proteins?

Transport proteins must be peripheral proteins because they need to be able to move within the cell membrane to facilitate the transport of molecules across the membrane. Peripheral proteins are not embedded within the lipid bilayer of the membrane, allowing them to move more freely and interact with molecules on both sides of the membrane. This mobility is essential for transport proteins to effectively transport molecules across the cell membrane.


What are the protein molecules in a cell membrane that assist in cell transport?

Protein molecules involved in cell transport include carrier proteins, channel proteins, and pump proteins. Carrier proteins bind to specific molecules and transport them across the membrane, channel proteins form channels for molecules to pass through, and pump proteins use energy to actively transport molecules against a concentration gradient.


What do the channel proteins in the cell membrane do?

Channel proteins, a type of transport proteins to the cells, move molecules from outside of the membrane to the inside


How do carrier proteins facilitate the passive transport of molecules across a membrane?

Carrier proteins facilitate the passive transport of molecules across a membrane by binding to specific molecules on one side of the membrane and changing shape to transport the molecules across to the other side. This process does not require energy and is driven by the concentration gradient of the molecules.


How do carriers proteins facilitate passive transport of molecules across a membrane?

Carrier proteins facilitate passive transport of molecules across a membrane by changing its shape, by using ATP, to allow a substance to pass through the membrane.


How do transport proteins make make it easier for certain molecules to diffuse across a membrane?

Facilitated diffusion is the diffusion of molecules.across a membrane through transport proteins. Transport proteins make it easier for molecules to enter or exit acell. But the process is still a form of passive transport.


What are the parts of the membrane help large molecules pass through it?

Globular proteins.


What role do peripheral proteins play in the transport of molecules across the cell membrane, particularly in the context of transport proteins?

Peripheral proteins play a crucial role in assisting transport proteins in moving molecules across the cell membrane. They help in the recognition and binding of specific molecules, as well as in the regulation of transport protein activity. This collaboration ensures efficient and selective transport of substances in and out of the cell.


What type of molecules embebbed in the plasma membrane allows molecules to pass through the membrane by active or passive transport?

proteins


How do transport proteins work?

They are used in Facilitated Diffusion, helping to transport ions, macromolecules, and other substances incapable of entering a cell by themselves to cross through the plasma membrane of the cell.


What are function of membrane proteins?

Membrane proteins have a variety of functions. They relay signals between the cell's inside and outside environments. Transport proteins move the molecules across the membrane.