The cell walls of bacteria, fungi, and plant cells, and the extracellular matrix of animal cells are all external to the plasma membrane. Which of the following characteristics is common to all of these extracellular structures?
A) They must block water and small molecules to regulate the exchange of matter and energy with their environment.
B) They must provide a rigid structure that maintains an appropriate ratio of cell surface area to volume.
C) They are constructed of materials that are synthesized in the cytoplasm and then transported out of the cell for assembly.
D) They are composed of a mixture of lipids and nucleotides.

Question

Quizplus · Accepted Answer

These extracellular structures are indeed constructed from materials that are synthesized within the cytoplasm and then transported outside of the cell, where they are assembled into their final forms.

The Cell Walls of Bacteria, Fungi, and Plant Cells, and the Extracellular