Eukaryotes have ________ in their cytoplasmic membranes, which serve to strengthen and stabilize the membrane and make it less flexible. Many bacteria have similar molecules, known as ________, in their cytoplasmic membranes that have a similar role.
A) ether bonds / ester bonds B) lipids / phospholipids C) sterols / hopanoids D) phospholipids / lipopolysaccharides