In multicellular organisms cells must communicate to make the organism work as a whole. Which of the following might be useful for both long and short distance communication between animal cells?
A) cell to cell contacts
B) secretion of molecules into body fluids
C) emitting high frequency sound waves to excite other cells
D) producing electrical impulses that flow through interstitial fluid

Question

Quizplus · Accepted Answer

Secretion of molecules into body fluids is a mechanism used for both long and short distance communication between cells in multicellular organisms. These molecules, such as hormones, can travel through the bloodstream to reach distant cells or affect nearby cells.

In Multicellular Organisms Cells Must Communicate to Make the Organism