Which statement is not an example of intercellular communication? A message travels between gap junctions. An electrical signal causes muscle cells to contract together. A molecule stimulates a target cell via a receptor. A message is distributed across plasma membrane.

Brian has a medical condition called cone dystrophy, which is a disorder of the cone cells in the eye. what symptoms would you expect brian to have? a. inability to see in the dark b. difficulty determining colors c. difficulty determining shapes and outlines d. inability to see in all light conditions