Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 11.3, Problem 2CC
When a signal transduction pathway involves a phosphorylation cascade, how does the cell's response get turned off?
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When a signal transduction pathway involves a phosphorylation cascade, how does the cell’s response getturned off?
How is an extracellular signal converted to an intracellular signal in signal transduction? Give a specific example.
How does phosphorylation result in signal amplification in the cell?
Chapter 11 Solutions
Campbell Biology
Ch. 11.1 - Explain how signaling is involved in ensuring that...Ch. 11.1 - In liver cells, glycogen Phosphorylase acts in...Ch. 11.1 - Prob. 3CCCh. 11.2 - Prob. 1CCCh. 11.2 - WHAT IF? What would the effect be if a cell made...Ch. 11.2 - MAKE CONNECTIONS How is ligand binding similar to...Ch. 11.3 - What is a protein kinase, and what is its role in...Ch. 11.3 - When a signal transduction pathway involves a...Ch. 11.3 - What is the actual signal that is being transduced...Ch. 11.3 - WHAT IF? If you exposed a cell to a ligand that...
Ch. 11.4 - How can a targct cell's response to a single...Ch. 11.4 - WHAT IF? If two cells have different scaffolding...Ch. 11.4 - Prob. 3CCCh. 11.4 - Prob. 4CCCh. 11.5 - Give an example of apoptosis during embryonic...Ch. 11.5 - WH AT IF? If apoptosis occurred when it should...Ch. 11 - What determines whether a cell responds to a...Ch. 11 - How are the structures of a GPCR and an RTK...Ch. 11 - What is the difference between a protein kinase...Ch. 11 - What mechanisms in the cell terminale its response...Ch. 11 - What is an explanation for the similarities...Ch. 11 - Binding of a signaling molecule to which type of...Ch. 11 - The activation of receptor tyrosinc kinases is...Ch. 11 - Lipid-soluble signaling molecules, such as...Ch. 11 - Consider this pathway: epinephrine G...Ch. 11 - Apoptosis involves all but which of the following?...Ch. 11 - Which Observation suggestcd to Sutherland the...Ch. 11 - Prob. 7TYUCh. 11 - DRAW IT Draw the following apoptotic pathway,...Ch. 11 - EVOLUTION CONNECTION Identify the evolutlonary...Ch. 11 - Prob. 10TYUCh. 11 - SCIENCE, TECHNOLOGY, AND SOCIETY The aging process...Ch. 11 - WRITE ABOUT A THEME: ORGANIZATION The properties...Ch. 11 - SYNTHESIZE YOUR KNOWLEDGE There are five basic...
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- What is the benefit of using second messengers and phosphorylation cascades during the transduction step of cell signaling?arrow_forwardWhat is the sequence of events that takes place in cell signaling?arrow_forwardWhat is the main benefit of cell signaling via direct physical contact and cell signaling over short distqnces (ex.: nerve cell signaling)?arrow_forward
- What key role does signal transduction play in the signaling process?arrow_forwardWhat are the general pathway of signal transduction, and the role of phosphorylation-dephosphorylationin it?arrow_forwardWhy is the lifetime of second messengers so crucial to signaling efficiency? Example: Genetically engineering a second messenger by increasing its lifetime would decrease the efficiency of its signal in a cell's signaling system.arrow_forward
- What are the four parts of cell signaling?arrow_forwardWhich of the following describes the way in which phosphorylation cascades can improve signal transduction efficiency in a signal transduction pathway? A B с D They facilitate the amplification of the initial signal. They counter the effects of protein phosphatases. They ensure the production of the correct cellular response. They decrease the speed of signal transduction in the pathway.arrow_forwardIn terms of cell communication, compare and contrast the action of hydrophilic versus hydrophobic ligands (signaling molecules). What type of receptor is used by these ligands? How does each type of ligand influence cell activity?arrow_forward
- Molecule X is a soluble protein that is secreted in response to extracellular signal Y. Which sorting signal must molecule X have?arrow_forwardThe structure of a plant cell wall needs to loosen to accommodate cell growth. What signaling molecule controls this process?arrow_forwardWhat are the enzymatic activities of the sodium-potassium ATPase (pump)? binds to and hydrolyzes ATP; binds to 3 Na+ in cytoplasm and releases outside cell; binds to 2 K+ outside cell and releases into cytoplasm binds to and hydrolyzes GTP; binds to 3 Na+ in cytoplasm and releases into nucleus; binds to 2 K+ inside cell and releases into lysosome binds to and hydrolyzes 3 ATP; binds to 1 Na+ in cytoplasm and releases outside cell; binds to 1 K+ outside cell and releases into cytoplasm binds to and hydrolyzes ATP; binds to 2 Na+ in cytoplasm and releases outside cell; binds to 3 K+ outside cell and releases into cytoplasmarrow_forward
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