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Author Question: Proteins that travel to target cells and act as chemical messengers are known as ____. a. collagens ... (Read 73 times)

ARLKQ

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on: Aug 20, 2018
Proteins that travel to target cells and act as chemical messengers are known as ____.
 a. collagens
 b. hormones
  c. opsins
 d. antigens
 e. enzymes

Question 2

What is the practice of eating nonnutritive substances such as clay, chalk, and laundry starch known as?
 a. fool
 b. pone
  c. file
 d. pica
 e. kitta


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BAOCHAU2803

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Reply #1 on: Aug 20, 2018
Answer to Question 1

b

Answer to Question 2

d


ARLKQ

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Reply 2 on: Aug 20, 2018
Wow, this really help

chereeb

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Reply 3 on: Yesterday
:D TYSM

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