___________ do(es) not require membrane receptors to invoke cell responses.
A)Peptides
B)Catecholamines
C)Steroids
D)Thyroid hormone
E)Corticotropes

Question

Quizplus · Accepted Answer

Steroids can diffuse easily through the cell membrane and bind to intracellular receptors to activate gene transcription and cell responses without the need for membrane receptors. Peptides, catecholamines, thyroid hormone, and corticotropes all require membrane receptors to initiate cellular responses.

___________ Do(es) Not Require Membrane Receptors to Invoke Cell Responses