A ________ is a regulatory molecule that is secreted into the blood by an endocrine gland.
A)metabolite
B)hormone
C)peptide
D)G protein
E)neurotransmitter

Question

Quizplus · Accepted Answer

A hormone is a regulatory molecule that is secreted into the blood by an endocrine gland. Metabolites are molecules that are involved in metabolism, peptides are a type of molecule composed of amino acids, G proteins are intracellular signaling molecules, and neurotransmitters are chemicals that transmit signals between neurons.

A ________ Is a Regulatory Molecule That Is Secreted into the Blood