Biology - Cells - Transport Across Cell Membrane 0.0 / 5 ? BiologyCellular processes and structureA2/A-levelAQA Created by: A l e xCreated on: 15-01-19 18:31 What is the plasma membrane? The type of membrane around and within all cells. Plasma membranes have a basic structure and only differ in the substances they contain. 1 of 5 What is a cell surface membrane? Refers to the plasma membrane that surrounds a cell and forms a boundary between the cell cytoplasm and the surrounding environment. 2 of 5 What are the functions of a cell surface membrane? Allows different conditions to exist inside and outside the cell; Controls the movement of substances in and out the cell. 3 of 5 What makes up a cell surface membrane? Phospholipids, proteins, cholesterol, glycoproteins and glycolipids. 4 of 5 What do phospholipids do in the cell surface membrane? Phospholipids form a bilayer 7-10nm in length; hydrophobic phosphate heads point outward 5 of 5
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