Chemical messengers secreted from cells in a multicellular organism that travel throughout the body and act on distant cells are called _____.

0 votes

 

  

hormones

  

receptor tyrosine kinases

  

second messengers

  

G proteins

 

asked Dec 25, 2012 in Biology by anonymous
    

1 Answer

0 votes
hormones
answered Dec 25, 2012 by anonymous



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