TLS Online TPP Program

#Question id: 11543


Hormone X activates the cAMP second messenger system in its target cells. The greatest response by a target cell would come from ________.

#SCPH28 | Zoology
  1. applying a molecule of hormone X to the extracellular fluid surrounding the cell
  2. injecting a molecule of hormone X into the cytoplasm of the cell
  3. applying a molecule of cAMP to the extracellular fluid surrounding the cell
  4. injecting a molecule of activated, cAMP-dependent protein kinase into the cytoplasm of the cell