Question

The barrier between the intracellular and extracellular fluid compartments in an animal or plant is the:________

Answer 1

The barrier between the intracellular and extracellular fluid compartments in an animal or plant is the plasma membrane.

The plasma membrane or cell membrane is a double membraned cell organelle that surrounds and protects the cell and other cell organelles. Both prokaryotic and eukaryotic cells have a cell membrane.

The plasma membrane is about 5 - 8 nm in thickness and is composed of proteins, lipids and carbohydrates that come together to form a flexible bilayer. This lipid bilayer gives the cell membrane its ability to separate intracellular and extracellular fluids.

The plasma membrane also plays a role in signalling and communication between cells and anchors the cytoskeleton to provide cell shape and maintain cell potential.

Learn more about the plasma membrane here:

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