Biology, 17.04.2020 12:12 kaitlynbrace4214

What is a hormone?
1. A response to a stimulus that sends an electric impulse
2. An enzyme produced by the digestive system to help break down food molecules.
3. A chemical produced by an organism to control and regulate the activities of certain cells
4. None of the other answer choices

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What is a hormone?
1. A response to a stimulus that sends an electric impulse
2. An enzy...