Biology / Unit 4 Bio 0813 short lesson, about 20 seconds
Signal Transduction Can Drive Cell Growth
Captions available
The idea
A growth factor is a ligand that binds a receptor tyrosine kinase and, through the RAS G-protein and the MAP kinase pathway, drives a cell toward division.
In practice
The epidermal growth factor receptor triggers a cascade that leads a cell to grow and divide once its ligand binds.
Where people slip
Cells do not divide spontaneously — division requires an external growth-factor signal reaching this pathway.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Something wrong in this lesson? Flag it · Sources for Biology