What does selectively permeable cell membrane mean?
A cell membrane is the thin layer of lipids that surrounds a cell and acts as a protective barrier. The cell membrane allows nutrients to enter and waste products to leave the cell. It also plays a role in cell-cell communication by passing chemical messages to other cells.
What does selectively permeable cell membranes mean in English?
A cell membrane is the thin layer of fat that surrounds a cell. It allows certain substances to pass into or out of the cell, depending on the type of the cell. For example, if we have skin cells, they are very permeable to water and nutrients. This makes sure that our bodies do not dry out. The same goes for cells that line the digestive tract. They allow nutrients to pass in while keeping the contents of the digestive tract isolated.
What does selectively permeable cell membrane mean in biology?
The cell membrane is an essential structure that defines and protects all living cells. It consists of a lipid bilayer that allows a controlled exchange of substances between the inside and outside of the cell. The cell membrane acts as a barrier to prevent unwanted intruders like viruses, bacteria, and parasites from entering the cell. It also helps the cell to determine whether it is friend or foe. For example, human white blood cells recognize foreign invaders and kill them, while cancer cells can go unnoticed by the immune system
What do selectively permeable cell membranes mean?
Life is made possible by the membranes that surround the cells in living organisms. These membranes are able to control the transfer of materials between the inside and the outside of the cell. If the cell membrane is able to selectively allow the passage of certain substances, while preventing the passage of others, this property is known as selectivity.
What does permeable cell membrane mean?
The permeable cell membrane refers to the outermost layer of the cell that allows the cell to respond to the outside environment. The cell membrane consists of a lipid bi-layer with embedded proteins. This allows the permeation of nutrients, wastes, ions, and other small molecules that help the cell to function properly.
