Cell Signaling Problem Set
Problem 3: Signal Responses II
Tutorial to help answer the question
Which of the following is NOT a typical event associated with cell signaling?
Cell responses to external signaling
Typical responses of cells to external signals include activation of G-proteins, production of second messengers, activation of protein kinases, and the release of calcium ions from membranes. Calcium ions are considered to be second messengers. A cell response to external signals may include apoptosis, but this is not considered to be a typical response.
The Biology Project
Department of Biochemistry and Molecular Biophysics
University of Arizona
Revised: August 2004
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