4.1: Cell Structure and Function - Medicine LibreTexts
https://med.libretexts.org/Bookshelves/Anatomy_and_Physiology/Human_Anatomy_and_Physiology_Preparatory_Course_(Liachovitzky)/04%3A_Smallest_Level_of_Complexity_Alive-_Cells_Their_Structures_and_Functions/4.01%3A_Cell_Structure_and_Function
WEBAug 14, 2020 · However, all cells have three main parts, the plasma membrane, the cytoplasm and the nucleus. The plasma membrane (often called the cell membrane) is a thin flexible barrier that separates the inside of the cell from the environment outside the cell and regulates what can pass in and out of the cell.
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