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rewona [7]
3 years ago
6

Which class of molecules functions as chemical signals?

Biology
2 answers:
omeli [17]3 years ago
7 0
A hormone is a molecule that functions as a chemical signal. A hormone is a chemical released by a cell or a gland in one part of the body that sends out messages that affect cells in other parts of the organism. Endocrine hormone molecules are secreted (released) directly into the bloodstream. !
sweet [91]3 years ago
6 0

The answer is HORMONES

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