Cell membrane

Subdecks (1)

Cards (10)

  • Cell membrane
    a thin double-layered membrane enclosing the cell that controls which substances can move in and out of it
  • Fluid mosaic model
    Fluid - refers to the movement of some of the phospholipid and protein molecule within the layers
    Mosaic - made of different components e.g proteins
  • selectively permeable
    some substances can pass through while others cannot
  • Qualities
    thin - for efficient movement of materials across
    Large surface area - increases the rate of movement of nutrients into wastes
    Flexible - allows unicellular organisms to move
  • Roles of the cell membrane
    provide structure
    seperates cytoplasm from the external environment
    Controls the movement of substances that move in and out of the cell