Which of the following is NOT an example of an extracellular matrix?
A) cuticles of plants
B) cuticles of crabs
C) cell walls
D) cell membranes
E) basement membranes

Question

Quizplus · Accepted Answer

The cell membrane is not an extracellular matrix, it is the plasma membrane that surrounds the cell and separates the intracellular and extracellular fluid compartments. The other choices are all examples of extracellular matrix, with plant cuticles being composed of wax and polysaccharides, crab cuticles being composed of chitin, cell walls being composed of cellulose in plants and chitin in fungi, and basement membranes being composed of various glycoproteins and proteoglycans.

Which of the Following Is NOT an Example of an Extracellular