BIOL 1406 Quiz 3 with 100% correct answers

BIOL 1406 Quiz 3 with 100% correct answersThe 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