Question #8ef24 Biology Movement In and Out of Cells Cell Membrane 1 Answer Fty Jul 29, 2017 interior of the membrane Explanation: ![https://www.khanacademy.org/science/biology/bacteria-archaea/prokaryote-structure/v/bacteria]() If you see the above picture you can see where the tails and heads are. The tails are in the interior of the membrane whereas the heads are in the exterior of the membrane. Answer link Related questions How is the cell membrane affected by temperature? How does the cell membrane change shape? How does a cell membrane affect water movement? Why are cell membranes selectively permeable? How does a cell membrane become polarized? How does the lipid bilayer form a barrier to molecules? How does cholesterol affect lipid bilayer? How do lipid bilayers form? How do ions cross the lipid bilayer? How can a molecule be hydrophobic? See all questions in Cell Membrane Impact of this question 3942 views around the world You can reuse this answer Creative Commons License