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How do carrier protiens transport substances across cell membrane?
Wiki User
∙ 12y ago
1-A carrier prrotein binds to a molecule on one side of the cell membrane.
2-The carrier protein changes shape,shielding the molecule from the interior membrane.
3-The molecule is released on the other side of the membrane.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoThey put them on there backs and carry them across the treacherous surface of the cell membrane
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What functions do carrier proteins perform in active transport?
Carrier proteins of the cell membrane transport substances down their concentration gradient out of or into the cell by facilitated diffusion and active transport.
Internal membranes that move substances through the cell?
There are different types of proteins embedded in the cell membrane that do this. Channel proteins act as...well channels... allowing substances to move in. Carrier protiens change shape in response to a substance and move it into the cell. Ligand-gated protiens don't allow anything in until a special signal molecule, called a ligand, binds to it signalling it to let the substances in. Also these protiens may or may not require energy to do thier job, depending on if its active or passive transport. Hope this helped.
Do filtration requires a membrane-bound carrier for transport?
no
Facilitated diffusion and active transport?
Facilitated diffusion = down concentration gradient, it just uses a carrier protein (doesn't need energy)Active transport =goes UP concentration gradient with the help of a carrier protein and ENERGY
How does a carrier protein work?
Carrier proteins facilitates the transport of specific substances through intracellular compartments or across the cell membrane. They bond and then drag the molecules across the bilipid layer, releasing them on the opposite side.
How does a protein transport substances across a cell membrane?
carrier protein
What functions do carrier proteins perform in active transport?
Carrier proteins of the cell membrane transport substances down their concentration gradient out of or into the cell by facilitated diffusion and active transport.
Is carrier protiens active or passive transport?
it is active
In active transport carrier proteins do what?
They help transfer substances from the outside of the cell membrane to the inside.
What is a passive transport using carrier protiens?
Facilitated diffusion
Are carrier proteins specific in their action?
Yes, carrier proteins are specific for the substances they transport across the plasma membrane.
What is the process by which substances are moved through the cell membrane by a carrier molecule?
facilitated diffusion or active transport
Facilitated diffusion carrier proteins and cell membrane pumps both?
They both transport substances up their concentration gradients.
Internal membranes that move substances through the cell?
There are different types of proteins embedded in the cell membrane that do this. Channel proteins act as...well channels... allowing substances to move in. Carrier protiens change shape in response to a substance and move it into the cell. Ligand-gated protiens don't allow anything in until a special signal molecule, called a ligand, binds to it signalling it to let the substances in. Also these protiens may or may not require energy to do thier job, depending on if its active or passive transport. Hope this helped.
Do filtration requires a membrane-bound carrier for transport?
no
What is a protein used to transport specific substances?
carrier protein
How do carrier proteins transport substance across the membrane?
The carrier protein changes shape , shielding the molecule from the interior of the membrane.
