Question

Which class of molecules functions as chemical signals? A:water B:carbohydrates C:hormones D:proteins

Answer 1

HOMONE(especially lignand)

Step-by-step explanation:

Chemical signals between cells are called ligands. A ligand is a molecule that binds another specific molecule. In the case of cell signaling, the ligand binds a receptor, a protein in or on the target cell. Examples of ligands include hormones and neurotransmitters.

i hope this helped