#Question id: 1183
#Unit 4. Cell Communication and Cell Signaling
Before ligand binding, receptor tyrosine kinases:
#Question id: 1184
#Unit 4. Cell Communication and Cell Signaling
The order of events in a signaling pathway can be determined by the analysis of mutants. Cells that express a mutant defective Raf protein cannot be stimulated to proliferate uncontrollably by constitutively active RasD (dominant active). This indicates:
#Question id: 1185
#Unit 4. Cell Communication and Cell Signaling
How can multiple MAP kinase pathways be segregated when they share a common component, like a downstream kinase?
#Question id: 1186
#Unit 4. Cell Communication and Cell Signaling
Which of the following explains why Ras is activated quickly by RTKs?
#Question id: 1187
#Unit 4. Cell Communication and Cell Signaling
Which protein stabilizes an intermediate in the Ras GTP hydrolysis reactions?
#Question id: 1188
#Unit 4. Cell Communication and Cell Signaling
Which of the following are enzyme pairs that catalyze opposite reactions?