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Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433776
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
Publisher: PEARSON
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Chapter 16.3, Problem 3CC
Summary Introduction
To explain:
Mutations that promote cancer have different effects on the proteins encoded by proto-oncogenes and tumor suppressor genes.
Introduction:
Mutation is a sudden and heritable change in the DNA (deoxyribonucleic acid) of an organism. Mutations in certain genes often result in cancer. Cancer is a disease characterized by the uncontrolled division of cells. Cancer cells have distinct features than normal cells. The cytoplasm is reduced, multiple nuclei are present, chromatin is coarse, and nucleoli are also multiple and enlarged in cancerous cells.
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Describe the general process of cell signalling pathways: what events take place for a signal to cause cellular changes? Provide examples and how perturbation of these events can result in “cancer pathways”. In addition, describe in detail a typical cancer pathway and its strategy to activate gene expression. What is the origin of many cancer pathways, i.e., during which stage of an organism’s live process(es) are they physiologically activated? Why is this important for cancer development?
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Chapter 16 Solutions
Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
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