#Question id: 1133
#Unit 4. Cell Communication and Cell Signaling
What tertiary structure characterizes all cytokines?
#Question id: 1134
#Unit 4. Cell Communication and Cell Signaling
Arrange the following proteins in the proper order in which they become activated in the MAPK signaling pathway:
a. MAP kinase b. MEK c. Ras d. Raf e. RTK
#Question id: 1135
#Unit 4. Cell Communication and Cell Signaling
Which of the following is a direct substrate of MAP kinase?
a. TCF b. SRF c. SRE d. p90RSK e. CREB
#Question id: 1136
#Unit 4. Cell Communication and Cell Signaling
Which of the following signaling pathways can be activated by activation of receptor tyrosine kinases?
a. phospholipase Cγ b. PI-3 kinase
c. MAP kinase d. none of the above
#Question id: 1137
#Unit 4. Cell Communication and Cell Signaling
A loss-of-function mutation in PTEN phosphatase results in
a. increased cell proliferation.
b. decreased cell proliferation.
c. increased apoptosis.
d. decreased apoptosis.
#Question id: 1138
#Unit 4. Cell Communication and Cell Signaling
A loss-of-function mutation in Wnt would have a phenotype similar to a
a. gain-of-function mutation in GSK-3.
b. gain-of-function mutation in β-catenin.
c. loss-of-function mutation in GSK-3.
d. loss-of-function mutation in β-catenin.