The Meaning of the Chrysanthemum Flower. The Chrysanthemum is the flower of the month for November, and this beautiful flower comes with a wide variety of meanings all across the globe. In Asia the chrysanthemum signifies life and rebirth, making them great gifts for birthdays and baby showers. In Europe the chrysanthemum signifies an expression of sympathy.
One of the main roles of a cell membrane is to absorb nutrients from the surrounding environment. In order to do this, the cell membrane must have proteins that detect the presence of molecules that should be taken into the cell.
The cell membrane controls what enters and leaves the cell, allowing the cell to absorb the oxygen and nutrients it needs to function and also protects the cell from most dangerous chemicals. It is vital because the cell needs to be able to control its oxygen and carbon dioxide levels.