#Question id: 1129
#Section 3: Genetics, Cellular and Molecular Biology
Which of the following plays a role in the relaxation of smooth muscle cells by nitric oxide?
a. cGMP b. protein kinase A c. protein kinase G d. guanylyl cyclise
#Question id: 1130
#Section 3: Genetics, Cellular and Molecular Biology
In muscle cells, glycogen phosphorylase kinase is activated by
a. Ca2+. b. diacylglycerol. c. nitric oxide. d. protein kinase A.
#Question id: 1133
#Section 3: Genetics, Cellular and Molecular Biology
What tertiary structure characterizes all cytokines?
#Question id: 1134
#Section 3: Genetics, Cellular and Molecular Biology
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: 1136
#Section 3: Genetics, Cellular and Molecular Biology
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
#Section 3: Genetics, Cellular and Molecular Biology
A loss-of-function mutation in PTEN phosphatase results in
a. increased cell proliferation.
b. decreased cell proliferation.
c. increased apoptosis.
d. decreased apoptosis.