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Type: Multiple-Choice
Category: Nervous and Endocrine Systems
Level: Grade 9
Score: 2
Author: Tooches
Last Modified: 7 months ago

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Nervous and Endocrine Systems Question

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Grade 9 Nervous and Endocrine Systems

Which chemical substances assist in regulating many functions in the human body?
  1. antigens
  2. monophils
  3. acetylcholine
  4. hormones
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