#Question id: 1861
#Unit 4. Cell Communication and Cell Signaling
Paroxysmal nocturnal hemoglobulinuria results from deficiency in:
#Question id: 4543
#Unit 3. Fundamental Processes
Control of the activator NtrC- In that case, the signal (low ammonia levels) induces a kinase that phosphorylates NtrC. This is type of
A. Indirect signaling
B. Direct signaling
C. Is an example of a signal transduction pathway
#Question id: 10770
#Unit 8. Inheritance Biology
#Question id: 7173
#Unit 5. Developmental Biology
Normally, the FgfR3 protein (a receptor tyrosine kinase) is activated by a fibroblast growth factor and signals the chondrocytes to stop dividing and begin differentiating into cartilage. This signal is mediated by the Stat protein, which is phosphorylated by activated FgfR3 and then translocated into the nucleus. Inside the nucleus, Stat activates the genes encoding a cell cycle inhibitor, the p21 protein. The mutation in FgfR3 causes the lethal condition thanatophoric dysplasia. This condition may be achieved by:
A. Mutations in the extracellular domain of the FgfR3 protein
B. Mutations in the tyrosine kinase intracellular domain of the FgfR3 protein
C. Mutations in the transmembrane domain of the FgfR3 protein
Which of the following is correct?
#Question id: 15238
#Unit 13. Methods in Biology