Which of the following is true of the structures labeled A in the cell membrane? 
Choose 1 answer: 
(Choice A) A They are membrane proteins. 
(Choice B) B They are entirely hydrophobic. 
(Choice C) C They are phospholipids. 
(Choice D) D They are carbohydrates. Report a problem
                                             
                                          
                                          
                                        
											 
			                  