Final answer:
The immune system recognizes transplanted organs as foreign and can attack them because of the glycoproteins and glycolipids on the surface of the organ.
Step-by-step explanation:
The immune system recognizes transplanted organs as foreign and can attack them because of the glycoproteins and glycolipids on the surface of the organ. These molecules act as antigens, which are proteins that bind to specific receptors on immune cells. When the immune system detects these antigens on the transplanted organ, it triggers an immune response to attack and destroy the organ.