What does selectively permeable mean how it is related to plasma membrane?
The plasma membrane is the thin boundary between the inside of a cell and the outside of the cell. It is selectively permeable so that it allows small ions to flow in or out of the cell, proteins to pass through it, and small particles like glucose.
What does selectively permeable mean in the context of plasma membrane?
The plasma membrane is a thin, lipid-bilayer covering all living cells. One of the most important functions of the plasma membrane is to serve as a barrier between the inside of the cell and the outside. It protects the cell from harmful substances that can cause damage. It also allows the cell to communicate with itself or surrounding cells through chemical signals that are transferred via the membrane.
What does selective permeability mean in cell science?
A cell’s plasma membrane is the protective layer surrounding the internal contents of the cell. This thin layer of fluid, which is usually between 5-10 nanometers thick, plays an important role in maintaining cell homeostasis. One of its most important functions is allowing the cell to regulate the internal concentration of certain substances. This allows the cell to respond to changes in its environment by selectively allowing some substances to enter or exit the cell.
What does SELECTIVELY permeable mean?
The cell membranes are known to possess different permeability properties. The membranes are selectively permeable to different ions and different chemical species of the same nature. There are different types of membranes, each having a unique permeability property. Plasma membranes are among the most crucial membranes of the cell because they protect the cell from the outside environment. They are also involved in the cell’s function.
What does selectively permeable mean?
The plasma membrane (PM) is the thin layer of cytoplasm surrounding plant and animal cells. It is the home of all intracellular processes that take place in living organisms. The structure and organization of the PM are mainly maintained by the actin cytoskeleton. Plant PM is more permeable to water and small ions than to large macromolecules. This property is known as selective permeability. Cell wall is the outermost layer of plant cells. Cell wall is responsible for