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Selective permeability is demonstrated by the cell membrane's ability to permit oxygen to pass through it while blocking the passage of a big protein. The statement is correct.
Only some substances are permitted to enter across the plasma membrane due to selective permeability. Because it only allows specific molecules to enter and exit cells, the plasma membrane is known as a selectively permeable membrane. It permits ions and small polar molecules to diffuse through the lipid layer but prevents big polar molecules and hydrophobic molecules from doing so. In accordance with the purpose of the cell, this maintains a constant internal environment for the cell and permits only specific substances to flow from the external environment to the inside of the cell.
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A. True
Selective permeability of the cell membrane refers to its ability to differentiate between different types of molecules, only allowing some molecules through while blocking others. Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment.
The most common example of Selective permeability is the phospholipid bilayer cell membrane that surrounds every cell in our bodies. Another example of a selectively permeable membrane is the inner membranes of an egg. Integral proteins are helpful for transporting larger molecules, like glucose, across the cell membrane.
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