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 is a characteristic common to all of these extracellular structures?

A) They must block water and small molecules in order to regulate the exchange of matter and energy with their environment.

B) They must permit information transfer between the cell's cytoplasm and the nucleus.

C) They must provide a rigid structure that maintains an appropriate ratio of cell surface area to volume.

D) They are constructed of polymers that are synthesized in the cytoplasm and then transported out of the cell.

E) They are composed of a mixture of lipids and carbohydrates.

Question

Biology

Broderick Hardy

26 December, 19:30

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 is a characteristic common to all of these extracellular structures?

A) They must block water and small molecules in order to regulate the exchange of matter and energy with their environment.

B) They must permit information transfer between the cell's cytoplasm and the nucleus.

C) They must provide a rigid structure that maintains an appropriate ratio of cell surface area to volume.

D) They are constructed of polymers that are synthesized in the cytoplasm and then transported out of the cell.

E) They are composed of a mixture of lipids and carbohydrates.

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Answers (1)

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Journey Brady · Answer 1

D) They are constructed of polymers that are synthesized in the cytoplasm and then transported out of the cell.

Explanation:

Proteins, complex carbohydrates, lipids are important polymer components of the cell wall of bacteria, fungi, and extracellular matrix of animal cells. These all structures are located outside the plasma membrane but the raw material required to make these structures are synthesized inside the cell in the cytoplasm and exported outside the cell membrane by transporters.

Therefore cell walls of different organisms and extracellular matrix of animal cells are constructed of polymers that are produced in cytoplasm and are transported outside the membrane.