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What is the difference between an antiporter and a symporter in terms of their mechanisms of transport?
An antiporter moves two different molecules in opposite directions across a cell membrane, while a symporter moves two different molecules in the same direction.
What is the difference between a symporter and an antiporter in terms of their mechanisms of transport across cell membranes?
A symporter moves two different molecules in the same direction across a cell membrane, while an antiporter moves two different molecules in opposite directions.
What is antiporter?
An antiporter is a cell protein which acts within an antiport to transport different molecules or ions across the membrane in opposite directions.
How enter the cell?
A few, like OH- can pass the membrane without help, but most ions need canal proteins (that means a uniport, symport, or antiporter) and probably a carrier protein additionally.
In the parietal cells of the stomach the uptake of chloride ions is coupled to the transport of bicarbonate ions out of the cell This type of transport system is called?
This type of transport system is called an antiporter, specifically an anion exchanger. It is responsible for maintaining the acidic environment in the stomach by secreting hydrochloric acid while also preventing excessive acidification of the cell interior.
Is sodium-potassium pump a uniporter?
No, the sodium-potassium pump is not a uniporter. It is a type of antiporter that uses energy to actively transport both sodium ions and potassium ions across the cell membrane in opposite directions.
How citrulline transported into cytosol from mitochondria?
Citrulline is transported from the mitochondria to the cytosol primarily through specific transport proteins in the mitochondrial inner membrane. One key transporter involved in this process is the citrulline/ornithine antiporter, which facilitates the exchange of citrulline for ornithine, allowing citrulline to enter the cytosol. This transport is crucial for the urea cycle and for the synthesis of arginine, which is essential for various physiological functions.
How do water molecules and small ions enter a cell?
Some water molecules and small ions ( depending on charge, other ions need passive or active transport ) can diffuse across the cell's membrane and there are channels called porins that facilitate water molecule passage into the cell.
