Asked Oct 6, 2019

Sort the following items based on which stage they are involved in: reception, transduction or response.

  • Signaling molecule
  • Receptor lyrosine kinase
  • Protein synthesis
  • G protein-coupled receptor
  • cAMP
  • Second messenger
  • Ca2+
  • Phosphorylation cascade
  • IP3
  • Adenylyl cyclase

Expert Answer

Step 1

A Signaling pathway is a series of events that occur between reception (or receiving of signal) to response (action done by the cell) of a signal that may have generated from outside the body or inside the body.

Three major steps involved in signal transduction: reception, transduction, and response.


Step 2

Reception: Reception is a chemical signal which binds to a cellular protein at the cell’s surface or inside the cell. when a signal molecule binds to receptor protein which causes to change its shape.


Example: Ligand binds to the receptor and causes receptor protein to change its shape. Most signal receptors are plasma membrane protein-like G-protein-linked receptors, receptor tyrosine kinases, and ion-channel receptors.


Transduction: It is binding leads to a change in the receptor that triggers a series of changes in a series of different molecules along a signal-transduction pathway. The molecules in the pathway are called relay molecules. It is used in multiple pathways. Protein phosphorylation is a common example...

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