Cell Communication

Learning Objectives

  • Describe how adenlyl cylases and phospholipase C lead to changes in cell behavior.
  • Describe how cells turn off activated signaling pathways.
  • Describe how steroids alter gene expression.
  • Diagram how receptors activate heterotrimeric GTP-binding proteins.
  • Diagram how tyrosine kinases recruit proteins to the cell membrane.
  • Distinguish between paracrine and endocrine signaling.
  • Given a diagram of a signaling pathway, students should be able to identify ways to manipulate the pathway to increase and decrease the strength of the pathway.