A microscopic membrane of lipids and proteins that forms the external boundary of the cytoplasm of a cell or encloses a vacuole, and that regulates the passage of molecules in and out of the cytoplasm.
- The electrode tip pushes through the cell wall tending to jump quickly across the plasma membrane into either the cytoplasm or the vacuole.
- Cholesterol is one of the major lipid components of the plasma membrane of mammalian cells.
- Among all the fluxes in the whole plant, the passage of through the plasma membrane of root cells has been intensively studied.
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