Wayne State University BIO 2870 ch03

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The smallest living unit within the human body is 1) A) a protein. B) an organ system. C) a tissue. D) the cell. E) an organ. 2) Which of the following terms is/are not used to define the structure that separates the contents of a human cell from its surrounding medium? 2) A) cell wall B) phospholipid bilayer C) plasma membrane D) cell membrane E) both a cell wall and a phospholipid bilayer 3) Functions of the plasma membrane include all of the following except 3) A) separation of the cytoplasm from the extracellular fluid. B) thermal insulation. C) sensitivity to chemical changes in the extracellular fluid. D) regulation of exchange of materials with the extracellular environment. E) structural support. 4) The plasma membrane is composed of 4) A) a bilayer of phospholipids.