Bio1151 Chapter 11 9
  1. Cell-to-cell communication is essential for                  organisms.
     
  2. Cells that are in direct            can communicate by connecting their cytoplasm.
     
  3. Animal cells communicate over short distances by              signaling and             signaling. _act_11&A
     
  4. Both plants and animals use             for long-distance signaling.
     
  5. Cell signaling comprises three _ANI_11,2 stages:             ,                , and            .
     



     
  6. Each cell has a unique combination of            ,         , and             proteins, allowing wide                in their responses to different signals.
     
    Review: Build a Signaling Pathway.