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Author Question: A _______ is a chemical messenger that has a specific regulatory effect on certain cells or organs. ... (Read 60 times)

stock

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on: Jul 12, 2018
A _______ is a chemical messenger that has a specific regulatory effect on certain cells or organs.
 
  Fill in the blank(s) with correct word

Question 2

An action or influence that produces a reaction in a receptor and initiates a nerve impulse is a _______.
 
  Fill in the blank(s) with correct word


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iceage

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Reply #1 on: Jul 12, 2018
Answer to Question 1

hormone

Answer to Question 2

stimulus


stock

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Reply 2 on: Jul 12, 2018
Wow, this really help

kthug

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Reply 3 on: Yesterday
:D TYSM

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