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.
A cellâs plasma membrane separates and protects the cell from its environment. The structure of a cell membrane allows only small uncharged molecules to diffuse through. However, nature has equipped cell membranes with several ways to control the movement of larger or charged molecules into or out of a cell. In some cases, transport across a cell membrane requires biochemical energy.