In cell signalling, a ligand

  1. is always a lipid
  2. is a carrier protein
  3. enters every cell
  4. binds to a complementary receptor on a target cell
Answer

D) binds to a complementary receptor on a target cell

Only cells with matching receptors respond. AS & A Level Biology · Topic 4 Cell Membranes and Transport · 4.1 Fluid mosaic membranes

Biology MCQ · More A Level Biology: Cell membranes and transport MCQs · Practise