Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 10, Problem 5RQ
Summary Introduction
To review:
The two-component signal transduction system.
Introduction:
Two-component signal transduction is a coupling mechanism which allows organisms to recognize and respond to change in environmental conditions. It contains a membrane-bound histidine kinase (HK) which can recognize a specific environmental stimulus as well as a response regulator (RR) that provides cellular response with the help of target genes. They are most common in gram-negative bacteria and cyanobacteria while are less common in archaea and eukaryotes. Â
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Describe the essential features of a signal-transduction circuit
Describe how a signal cascade may be terminated and explain why it is important to terminate signals.
Describe at least one mechanism that exists to switch off a signal after a signal transduction has occurred.
Chapter 10 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 10.1 - Prob. 1TQCh. 10.2 - Prob. 1TQCh. 10.2 - Prob. 2TQCh. 10.2 - Prob. 3TQCh. 10.2 - Prob. 4TQCh. 10.2 - Prob. 5TQCh. 10.3 - Prob. 1TQCh. 10.3 - Prob. 2TQCh. 10.4 - Prob. 1TQCh. 10.5 - Prob. 1TQ
Ch. 10.5 - Prob. 2TQCh. 10.6 - Prob. 1TQCh. 10 - Prob. 1RQCh. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - Prob. 9RQCh. 10 - Prob. 10RQCh. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Prob. 13RQCh. 10 - Prob. 14RQCh. 10 - Prob. 1TQCh. 10 - Prob. 2TQCh. 10 - Prob. 3TQCh. 10 - Prob. 4TQ
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- Why do different cells respond to the same stimulus in different ways? State three potential outcomes of signal transduction events.arrow_forwardDescribe the four phases of signal transduction in living organisms.arrow_forwardDescribe the evidence showing that axons seek specific targets.arrow_forward
- How does signal transduction work?arrow_forwardParkinson's Disease Parkinson's disease is neurodegenerative disorder that affects movement. Most people affected with Parkinson's disease demonstrate rigidity, slow movement, and shaking. The symptoms of Parkinson's disease occur when the cells that produce dopamine neurotransmitters die in the brain. Explain how the signal transmission at a synapse in an individual with Parkinson's disease is different than an unaffected individual. Describe the normal process of signal transmission at a synapse. Start with the arrival of an action potential at the axon terminal and include the name of the neurotransmitter that is affected by Parkinson's disease. Explain how the process is different in individuals affected with Parkinson's disease.arrow_forwardDraw a simple sketch illustrating signal amplification.arrow_forward
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