Chapter 9
Cell Communication
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Parts
- 1Why cells communicate5 min
- 2The three stages of cell signaling4 min
- 3How receptors recognize signals5 min
- 4Four kinds of receptors6 min
- 5How a growth factor tells a cell to divide4 min
- 6Second messengers and the fight-or-flight response4 min
- 7Amplifying, ending, and combining signals4 min
- 8One hormone, many responses3 min
- 9Programmed cell death3 min
- 10How apoptosis is triggered4 min
Key terms
- cell communication
- signal
- receptor
- cellular response
- direct intercellular signaling
- contact-dependent signaling
- autocrine signaling
- paracrine signaling
- endocrine signaling
- hormone
- signal transduction pathway
- conformational change
- ligand
- dissociation constant
- cell surface receptor
- enzyme-linked receptor
- protein kinase
- phosphorylation
- GPCR
- G protein
- ligand-gated ion channel
- intracellular receptor
- transcription factor
- growth factor
- receptor tyrosine kinase
- protein kinase cascade
- signal amplification
- second messenger
- cAMP
- adenylyl cyclase
- PKA
- phosphodiesterase
- epinephrine
- crosstalk
- differential gene regulation
- apoptosis
- caspase
- extrinsic pathway
- death receptor
- intrinsic pathway