Question

The cell membrane (plasma membrane) is describe as a highly selective barrier composed of a lipid bi-layer. This structure plays an important role in moving molecules across the cell membrane in order for the cell to maintain homeostasis. If the cell is unable to take in the materials it needs or remove what it does not need, the cell may die. This inability of cells to maintain homeostasis may cause sickness or even death of an organism. Why is it important that the cell membrane is highly selective?​

Answer 1

Answer:

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. ... Movement across a selectively permeable membrane can occur actively or passively

Explanation:

Answer 2

The cell membrane is highly selective in order to prevent certain ions/molecules from entering or exiting the cell. This feature is fundamental for maintaining the homeostasis of the cell.

• The homeostasis of the cell refers to the internal balance that cells must have to carry out their metabolic functions (e.g., reproduction, growth, differentiation, etc).

• The cell membrane is a highly selective lipid bilayer due substances do not cross it indiscriminately but instead it allows the entry/exit of specific particles into the cell.

• There are some substances that can move across the cell membrane in favor of a concentration gradient (passive transport) and others that move against a concentration gradient (active transport).

In conclusion, the cell membrane is highly selective in order to prevent certain ions/molecules from entering or exiting the cell.

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