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Molecular Biology Chapter 16
Signaling Pathways That Control Gene Expression
19
Biology
Graduate
11/24/2012

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Term
The EGF receptor is a(n)
Definition
kinase
Term
Binding of hormone to a receptor tyrosine kinase causes all of the following except
Definition
hydrolysis of GTP bound to Ras.
Term
Ras is a(n)
Definition
none of the above
Term
In which of the following double-mutant flies will R7 photoreceptors develop normally?
Definition
constitutively active MAPK and inactive Ras
Term
Serum response factor (SRF) is phosphorylated by
Definition
p90RSK
Term
By what mechanism does PI-3 phosphate promote activation of protein kinase B (PKB)?
Definition
Recruiting PKA to the plasma membrane, inhibting the PH domain, recruiting PI-3 to the plasma membrane
Term
Which of the following are enzyme pairs that catalyze opposite reactions?
Definition
PI-3 kinase and PTEN phosphatase
Term
Which of the following signaling pathways can be activated by cytokines?
Definition
All of the above
Term
Latent TGF beta is converted to mature TGF beta by
Definition
proteolysis
Term
A loss-of-function mutation in which of the following would inhibit TGF? signaling?
Definition
R-Smad
Term
A gain-of-function mutation in which of the following would promote malignancy in cells whose proliferation is inhibited by TGF??
Definition
I-Smad
Term
Which of the following receptors binds TGF??
Definition
types II and III
Term
Which of the following contain(s) an SH2 domain?
Definition
SHP1, SOC5, and STAT5
Term
Which of the following is a protein kinase?
Definition
EGF receptor
Term
Binding of erythropoietin to its extracellular receptor engages which of the following signaling pathways?
Definition
all of the above
Term
All genes regulated by PKA contain a cis-acting DNA sequence that binds to the phosphorylated form of a transcription factor called
Definition
CREB
Term
In the NF-KappaB signaling pathway, which of the following molecules is downstream of I-?B kinase?
Definition
NF-KappaB
Term
Which of the following is cleaved by regulated intramembrane proteolysis (RIP)?
Definition
Notch
Term
NF-kappa-B signaling is important in
Definition
Inflammation
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