Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 7.3, Problem 2R
Summary Introduction
To review:
The different actions of second messenger, such as cAMP (cyclic adenosine monophosphate) in different cells.
Introduction:
The second messengers play a significant role in the process of signal transduction pathway. They can diffuse freely throughout the cytoplasm and mediates the successive steps in the pathways.
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Why is cyclic AMP called a second messenger?
Explain Ca21 as a Second Messenger?
The cyclic AMP (second messenger) of signal transmission is very reactive and breaks down rapidly after synthesis. Why is this important to the signal-transmission process?
Chapter 7 Solutions
Life: The Science of Biology
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- Why are the catecholamines listed for a variety of receptor pathways?arrow_forwardEthanol is unusual in that it is freely soluble in both water and lipids. Thus, it has access to all regions of the highly vascularized brain. Although the molecular basis of ethanol action in the brain is not clear, ethanol evidently influences a number of neurotransmitter receptors and ion channels. Suggest a biochemical explanation for the diverse effects of ethanol.arrow_forwardWhat is allosteric regulation? Describe HOW allosteric regulation acts like an “on/off” switch for signal pathway receptors and WHY it is important to be able to turn a receptor off.arrow_forward
- Catecholamines like epinephrine and norepinephrine among having many physiological effects like increased blood pressure, on a molecular level will also promote the breakdown of what?arrow_forwardEndocrine Ligand acting on intracellular receptor should be: O Hydrophilic O Hydrophobic O Amphipathic O Macromolecule What kinds of molecules may pass througharrow_forward709. Explain the signal transduction mechanism for the phosphotidyl inositol second messenger systemarrow_forward
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