1.4a - Coordination Flashcards
Multicellular organisms signal between cells using…
extracellular signalling molecules
3 examples of extracellular signalling molecules
steroid hormones, peptide hormones and neurotransmitters
Receptor molecules of target cells are…
proteins with a binding site for a specific signal molecule
Binding changes…
the conformation of the receptor, which initiates a response within the cell
Different cell types produce…
specific signals that can only be detected and responded to by cells with the specific receptor
Signal molecules may have different effects on…
different target cell types due to differences in the intracellular signalling molecules and pathways that are involved
In a multicellular organisms, different cell types may show…
a tissue-specific response to the same signal
