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There is more potassium inside the cell during a resting period...as an action potential occurs, the cell becomes depolarized, or in other words there is an influx of sodium, allowing the membrane to open. As the action potential comes to an end, the cell repolarizes, meaning the levels of sodium rush outside of the cell again, while the potassium flows back in. As another action potential takes place, this happens over again.
What else can I help you with?
What enables guard cells to close and open?
I think it is Cell membrane
What looks like ER but is close to the cell membrane?
Endoplasmic reticulum
A gated channel in the wall membrane of a cell may be opened or shut like a gate in a fence?
True.
Are gated channel in the wall membrane of a cell may be opened or shut like a gate in a fence?
true
Which structure is a gatekeeper controlling what goes in and out of the cell?
That would be the "guard cells". The stoma is an opening on the underside of many leaves and each stoma is bordered by a pair of guard cells that open and close the pore to allow for "transpiration" (the passage of water in either gaseous or liquid form into or out of the leaf). In hot, dry weather, the guard cells close to prevent water loss. In humid weather, the guard cells allow the pore to open and water can enter.
What can be opened or closed in a cell membrane?
Channels, transporters, and receptors can be opened or closed in a cell membrane. Channels allow specific ions or molecules to pass through, transporters move specific molecules across the membrane, and receptors regulate signaling processes by opening or closing in response to specific molecules.
What Controls what moves in and out of the cell?
Cell membrane
Another name for plasma membrane?
A cell membrane is also known as a plasma membrane or cytoplasmic membrane. The cell membrane separates the interior of a cell from its outside environment. The main function of a cell membrane is to protect the cell from its surroundings.
What is the thin flexible membrane around all cells?
the cell membrane is as flexible barrier outside of the cell.
Which contains the other cell membrane or phospholipid?
the cell membrane
What controls the entering and leaving of a cell?
cell (plasma) membrane
What is the outer boundary of a cheek cell called?
cell surface membrane cell surface membrane
