Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 9, Problem 8TYK
Summary Introduction
Introduction:
During signal transduction, first messenger can act in two possible ways, either by binding to receptor and activating the cascade that then activates the target molecule or by entering the cytoplasm by itself. Only those signal molecules that are nonpolar can enter the cytoplasm and elicit the response.
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Chapter 9 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 9.1 - What accounts for the specificity of a cellular...Ch. 9.2 - Prob. 1SBCh. 9.2 - Prob. 2SBCh. 9.3 - Prob. 1SBCh. 9.3 - Prob. 2SBCh. 9.3 - Prob. 3SBCh. 9.3 - Prob. 4SBCh. 9.3 - Prob. 5SBCh. 9.3 - Prob. 6SBCh. 9.4 - What distinguishes a steroid receptor from a...
Ch. 9.4 - By what means does a specific steroid hormone...Ch. 9.5 - Prob. 1SBCh. 9 - In signal transduction, which of the following is...Ch. 9 - Which of the following could not elicit a signal...Ch. 9 - A cell that responds to a signaling molecule is...Ch. 9 - Prob. 4TYKCh. 9 - Prob. 5TYKCh. 9 - Which of the following is incorrect about pathways...Ch. 9 - Which of the following would not inhibit signal...Ch. 9 - Prob. 8TYKCh. 9 - Prob. 9TYKCh. 9 - Prob. 10TYKCh. 9 - Discuss Concepts Describe the possible ways in...Ch. 9 - Discuss Concepts Is providing extra insulin an...Ch. 9 - Discuss Concepts There are molecules called GTP...Ch. 9 - Discuss Concepts Why do you suppose cells evolved...Ch. 9 - How would you set up an experiment to determine...Ch. 9 - Prob. 16TYKCh. 9 - Prob. 1ITDCh. 9 - Prob. 2ITDCh. 9 - Prob. 3ITD
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- In this mechanim of receptor regulation, there is uncoupling of the signaling pathway. Even though the ligand is bound to the receptor located in the plasma membrane, downstream signaling is not occuring. This is best described as: Answers A-D A receptor internalization B receptor desensitization C receptor sensitization 5 D receptor downregulationarrow_forwardVery briefly, explain how a ligand binding to the extracellular receptor region of a GPCR causes a change in biological events inside the cell.arrow_forwardA mutation in Ras that prevents Ras from hydrolyzing GTP. Would cause? Why? A. Increased proliferation B. Decreased proliferationarrow_forward
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- Protein phosphorylation is commonly involved with all of thefollowing except(A) activation of receptor tyrosine kinases.(B) activation of protein kinase molecules.(C) activation of G protein-coupled receptors.(D) regulation of transcription by signaling molecules.arrow_forwardWhich of the following are characteristics of “small” monomeric Ras GTPases? A. Membrane bound B. Act as molecular switches between GTP & GDP C. They interact with receptors directly to regulate upstream events D. They are activated upon GTP binding E. None of the abovearrow_forwardWhich of the following domains would you not expect to see in the receptor for BMP4? A. A ligand-binding domain B. A transmembrane domain C. A cytoplasmic domain D. A DNA-binding domain E. All of the above would be seen in the receptor for BMP4arrow_forward
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