Chapter 7.5, Problem 3CC

Summary Introduction

To explain: Cellular synthesis and deposition of extracellular matrix (ECM) glycoprotein.

Concept introduction: Animal cells do not have cell wall but consists of plasma membrane. The cell synthesizes and secretes material outside of cell called extracellular matrix (ECM). The secretion of material outside the cell is carried out by a process called exocytosis. The ingredient of ECM includes glycoprotein and other carbohydrate containing molecules. Collagen is the most important and abundant glycoprotein in the ECM. Another protein called fibronectin is also present in the ECM. ECM plays a role in the cellular functions and protection. It provides signal to the animal cell that allows communication with the extracellular environment.