#Question id: 1116
#Unit 4. Cell Communication and Cell Signaling
What is a primary function of transcription factors?
#Question id: 1117
#Unit 4. Cell Communication and Cell Signaling
At puberty, an adolescent female body changes in both structure and function of several organ systems, primarily under the influence of changing concentrations of estrogen and other steroid hormones. How can one hormone, such as estrogen, mediate so many effects?
#Question id: 1118
#Unit 4. Cell Communication and Cell Signaling
What are scaffolding proteins?
#Question id: 1119
#Unit 4. Cell Communication and Cell Signaling
Phosphorylation cascades involving a series of protein kinases are useful for cellular signal transduction because they:
#Question id: 1120
#Unit 4. Cell Communication and Cell Signaling
A mutation that knocks out the GTPase activity of a G protein would have what effect on a cell?
#Question id: 1121
#Unit 4. Cell Communication and Cell Signaling
Which of the following provides the best evidence that cell-signaling pathways evolved early in the history of life?