Functions of cell surface Receptors .
most ligands responsible for cell-cell signaling ( including neurotransmitters, peptide, hormones, and growth factors) bind to receptors on the surface of their target cells.
Answer:
go ask this on reddit not brainly
Explanation:
The answer is B.) Insecta.
Answer:
Kingdom, Phylum, class, order, family, genus, species. Phylum is a broader category than family, therefore organisms would be more closely related if they were in the same family.
Explanation: