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Author Question: ________ The immune system is a protective mechanism designed to defend the body against substances ... (Read 40 times)

sdfghj

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on: Jun 25, 2018
________ The immune system is a protective mechanism designed to defend the body against substances that might be harmful to it.
 
  Indicate whether the statement is true or false

Question 2

The ________ is one of the most basic units of life, often described as the basic building block of the human body.
 
  a. atom
  b. molecule
  c. organelle
  d. cell


Kedrick2014

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Reply #1 on: Jun 25, 2018
Answer to Question 1

True

Answer to Question 2

d


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