Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 1, Problem 62SA
Summary Introduction
To review:
The reason behind cancerbeing an example of the fragility of a robust system.
Introduction:
There are different and diverse disturbances present in the environment. The ability of a system to maintain its stability, even in the presence of such perturbation, ss referred to as its robust tendency.
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Chapter 1 Solutions
Biochemistry: The Molecular Basis of Life
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- How important are a cell’s neighbors to maintaining its GRN and consequently its fate?arrow_forward"In the regulation of molecular switches, protein kinases and guanine nucleotide exchange factors (GEFs) always turn proteins on, whereas protein phosphatases and GTPase activating proteins (GAPS) always turn proteins off" is true or false.arrow_forwardDiscuss two-three ways that kinases/phosphatases OR proteasomes ensures proper rates of cell division.arrow_forward
- The following image is based on real results from an influential experiment in cell biology. This experiment studied the role of the proteins Ran and importin in nuclear protein transport. The experiment used flourescently-labeled proteins containing a nuclear localization sequence (the "substrate"). Ran, importin, and GTP were either present or absent, as indicated in the figure. Cells were exposed to these different conditions and then analyzed by fluorescence microscopy. Circles are the cells' nuclei. Very light circles are the nuclei without the substrate attached. Study the figure below and then answer the questions that follow. 1. What actions does Ran perform by itself? 2. What actions does importin perform by itself? 3. How do Ran and importin act together in the nuclear import of protein? 4. Why is GTP required?arrow_forwardDoes Dpp stimulate cell division, cell growth, or both? How can you tell?arrow_forwardWhich is true for cancer cells: 1) Cell death occurs after a determined number of cell divisions 2) Contact with other cells reduces chance of cell division 3) Cell division occurs in the presence of stop signals.arrow_forward
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