Answer :
Cell membranes are found in all cells. (option B)
Cell membranes composition can vary within different organisms, but they always contain different types of lipids.
What is not found in every cell are cell walls.
Cell membranes are found in all cells. (option B)
Cell membranes composition can vary within different organisms, but they always contain different types of lipids.
What is not found in every cell are cell walls.