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What does it mean if a cell membrane has selective permeability?
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What does selective permeability mean what is responsible for the selective permeability of the plasma or cell membrane?
When a cell's membrane is permeable, it means that only certain proteins and other molecules can go in and out of the porous membrane, through protein pumps and other pathways. Some molecules stay inside the cell, while others float outside. Starches, for example, are large molecules that cannot pass through the membrane.
What does selectively permeable mean?
Selective permeability relates to the properties of a membrane. It allows the passage of some substances and not others. Theoretically, it can be thought of as a sheet with holes of a set size in it. Only objects that are smaller than these holes will be able to pass through the sheet. In a proper membrane the 'holes' are usually a type of protein channel that can control permeability by charge as well as size.
What do membrane do?
If you mean the cell membrane, it keeps lets things in and out of the cell.
What does partially permeablele mean?
For a cell membrane, partial permeability means that only certain molecules can pass through like carbon dioxide and oxygen while other molecules such as glucose cannot.
What does it mean if a cell membrane is selectively permiable?
The cell membrane only allows certain molecules through.
A barrier between the inside of a cell and its environment?
The barrier between the inside of a cell and its enviorment is a CELL MEMBRANE
What does pK pNa value mean?
In the study of physiology, pK and pNa represent the membrane's permeability to potassium ions and sodium ions respectively. These values are intrinsic to the membrane being studied.
The cell membrane is selectively permeable. What does that mean?
Because plasma membrane allows only certain solute to move into the cell and outside the cell
Where is the membrane found?
Assuming by nuclear membrane, you mean the membrane that surrounds the nucleus of cells, then nuclear membrane are found keeping the tidbits of cell nuclei together in the middle of the cytoplasm of the cell.
Function of cytoplasmic membrane?
Outer cell surface that regulates entrance and exit of molecules.
What does membrane bound organelles mean?
an organelle(chloroplast,mitochondria) with a membrane covering around it
What does cell membrane mean in a plant?
controls the movement of substances into and out of the cell. Avios
