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If it's an animal cell, it's cell membrane. If it's a plant cell, it's cell wall. The cellular membrane is made up of various proteins found in a fluid of phospholipid molecules that create a bilayer The bilayer is formed when the polar water molecules repel the non-polar tails of the phospholipids causing them to stack up and form a non-polar interior. The non polar of the interior impedes the passage of water soluble substances. The bilayer sheets contain other proteins that serve various functions to allow passage in and out of the cell and help make up the membrane.

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Related Questions

Organelle that is boundary between the cell and its environment is what word?

The cell membrane is a organelles that is boundary between a cell and its environment.


What is the name of the boundary between a cell and its environment?

Plasma membrane or cell membrane


What is the cellular structure that separates the cytoplasm from the external environment?

The plasma membrane is the cellular structure that separates the cytoplasm from the external environment. It is a phospholipid bilayer embedded with proteins that selectively controls the passage of molecules into and out of the cell.


What structure serves as a cell's boundary?

The cell membrane.


What cells without cell walls forms the outside boundary that separates the cell from its environment?

The Cell Membrane forms the outside boundary that separates the cell from its environment.


How Harper cell membrane?

double layer phospholipids forms boundary between cell and surrounding environment and controls passage of materials into and out of cell


What in the cell without. cell wall the. forms the outside boundary that separates the cell from its environment?

In cells without cell walls, the cell membrane forms an outside boundary that separates the cell from its environment!


Structure that forms the outer boundary of a cell?

The cell membrane.


Which cell structure is semi-permeable and forms the boundary of the cell?

The cell membrane.


What cell structure is semi-permeable and form the boundary of the cell?

cell membrane


What forms outside boundary that separates the cell from its environment?

The cell membrane.


What forms the outside boundary that separates's the cell from its environment?

The cell membrane.