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Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is a process of passive transport, facilitated by integral proteins. Facilitated diffusion is the spontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane integral proteins. The facilitated diffusion may occur either across biological membranes or through aqueous compartments of an organism.
*This is from Wikipedia.....
Wiki User
∙ 13y ago
Wiki User
∙ 9y agoThe role of transport proteins in facilitated diffusion is to provide a hydrophilic route for the solute to cross the membrane.
Wiki User
∙ 12y agoTransport proteins change shape, much like a folding door
Wiki User
∙ 13y agoBoar
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What are Transports that requires energy from ATP to move substances across membranes?
active transport
What is the movement of materials across a membrane that requires energy input called?
Active transport requires energy and proteins to move the materials across the cell membrane. This is in contrast to osmosis, which doesn't require energy to move the material.
What role does a cellular membrane play in passive transport?
hahahah That's not even an answer. They act as barriers to the diffusion of certain substances. ---------------------------------------------------------------------------------- Better Answer: Well actually the membrane can facilitate diffusion (such as that of larger macromolecules) through channel proteins.
Does facilitated diffusion use transport proteins?
Passive diffusion across lipid bilayers :Small apolar molecules like O2 and C02, or ethanol diffuse across the bilayer.Polar or charged molecules do not cross the membraneActive transport :Membrane proteins, such as pores, canals, transporters, facilitators regulate diffusion across membranes.Within membranes :Lipid and proteins diffuse laterally (on the membrane plane).
How is active transport similar to facilitated diffusion?
They both serve to transport molecules across cell membranes and both make use of proteins embedded in cell membrane in order to move these molecules. -Estela Mireles
How do carrier proteins transport substances across membranes?
They control what enters and exits the cell :)
How do transport move substances across membranes?
Transport proteins change shape, much like a folding door
Which part allows or prevents substances to go into and out of the cell?
The cell membrane acts as the barrier and transport proteins present in the membrane, such as globular proteins, transport molecules across cell membranes.
Does active transport get substances across a cell membrane?
Transport proteins
What membrane components allow movement of non-polar substances across membrane?
Integral proteins allow movement of non-polar substances across membranes.
What is passive transpot?
Passive transport is moving biochemicals and other atomic or molecular substances across membranes
What are Transports that requires energy from ATP to move substances across membranes?
active transport
Is transport a function of a protein?
Transport protein provide channels for certain solutesTransport proteins are embedded in cellular membranes. They permit the passage across the membrane of substances that cannot pass through the phospholipid bilayer.Substances may pass through transport proteins by diffusion (often called facilitated diffusion because these substances cannot pass through any other part of the membrane) or by active transport.Transport proteins are subdivided into categories, such as channel proteins and carrier proteins, depending on details of their functioning.
What is the function of a transport protein?
Transport protein provide channels for certain solutesTransport proteins are embedded in cellular membranes. They permit the passage across the membrane of substances that cannot pass through the phospholipid bilayer.Substances may pass through transport proteins by diffusion (often called facilitated diffusion because these substances cannot pass through any other part of the membrane) or by active transport.Transport proteins are subdivided into categories, such as channel proteins and carrier proteins, depending on details of their functioning.
Are carrier proteins specific in their action?
Yes, carrier proteins are specific for the substances they transport across the plasma membrane.
How. do carriers proteins transport substances across cell membranes?
Carrier Proteins transport molecules from an area of higher concentration on one side of the membrane to an area of lower concentration on the other side.
Why do cell membranes have convolutions?
To increase surface area, allowing greater contact area for 'transport' of nutrients (movement of substances across the membrane).
