AP Biology 2.4.B Cell Wall Structure and Function

Practise AP Biology 2.4.B questions by identifying cell walls outside the plasma membrane and linking wall support to cell behavior in dilute solutions.

Exam points

identify a cell wall outside the plasma membrane in prokaryotic or plant cells
link cell-wall support to reduced swelling or bursting in dilute solutions

[Maximum number: 1]

Intact cells of two unknown cell types were placed into solutions with different concentrations of NaCl. Type I
cells swelled and burst in the solution with the lowest concentration of NaCl. Type II cells swelled but did not
burst in the solution with the lowest concentration of NaCl.
Which of the following descriptions of cell type I and cell type II are most consistent with the data?

Cell Type I: Animal cell surrounded by a plasma membrane only; Cell Type II: Plant cell surrounded by a plasma membrane and a cell wall

Cell Type I: Plant cell surrounded by a plasma membrane only; Cell Type II: Bacterial cell surrounded by a cell wall only

Cell Type I: Plant cell surrounded by a plasma membrane only; Cell Type II: Animal cell surrounded by a plasma membrane and a cell wall

Cell Type I: Animal cell surrounded by a cell wall only; Cell Type II: Bacterial cell surrounded by a plasma membrane only

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2.4.B—Describe the role of the cell wall in maintaining cell structure and function question 1