BIOL 1406 Quiz 3
The fluid mosaic model of membrane structure suggests that membranes - correct answer are composed
of proteins molecules embedded in a fluid bi-layer of phospholipids
The primary structual components of teh cell membrane are - correct answer phospholipids and proteins
Which of teh following membrane proteins tend to lack hydrophobic regions on their surfaces? - correct
answer peripheral membrane proteins
Which of the following is true of integral membrane proteins? - correct answer They are usually
transmembrane protein
The sugars associated with glycoproteins and glycolipids of animal cell membranes - correct answer
serve as markers that distinguish one cell from another
What kinds of molecules pass through a cell membrane most easily? - correct answer Small hydrophobic
Which of the following is a characteristic feature of a carrier protein in a plasma membrane? - correct
answer It exhibits a specificity for a particular type of molecule
Which of the following molecules would you expect to diffuse through the lipid bi-layer of a plasma
membrane most rapidly? - correct answer O2
Which of the following molecules would you expect to diffuse through the lipid bilayer of a plasma
membrane most slowly, if at all? - correct answer an amino acid
Which of the following statements about diffusion is correct? - correct answer It is a passive process in
which molecules move from a region of higher concentration to a region of lower concentration
