Biology - Study Guide
8th Edition
ISBN: 9780321501561
Author: Martha R. Taylor
Publisher: PEARSON EDUCATION (COLLEGE)
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Chapter 11, Problem 6IQ
Summary Introduction
To label: The components depicting the steps in signal transduction pathway that uses cyclic adenine mono phosphate (cAMP) as a secondary messenger.
Introduction:
A signal transduction pathway is a process involving transmission of signal along a cell by a series of events such as phosphorylation with the aim of producing a cellular response. A signaling molecule or a ligand binds to a specific receptor, so that the receptor undergoes a conformational change in its structure. This leads to stepwise enzymatic reactions, which are termed as signal transduction.
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Chapter 11 Solutions
Biology - Study Guide
Ch. 11 - How do plant hormones (often called plant growth...Ch. 11 - Prob. 2IQCh. 11 - Label the parts in the following diagram of an...Ch. 11 - Prob. 4IQCh. 11 - a. What does a protein kinase do? b. What is a...Ch. 11 - Prob. 6IQCh. 11 - Prob. 7IQCh. 11 - Prob. 8IQCh. 11 - a. What can one conclude from the fact that the...Ch. 11 - Prob. 1SYK
Ch. 11 - Briefly describe the three stages of cell...Ch. 11 - Some signaling pathways alter a proteins activity;...Ch. 11 - Prob. 4SYKCh. 11 - Prob. 1TYKCh. 11 - Steroid hormones a. bind to cell-surface...Ch. 11 - Prob. 3TYKCh. 11 - Prob. 4TYKCh. 11 - Which of the following is a key difference between...Ch. 11 - Many human diseases (including bacterial...Ch. 11 - Prob. 7TYKCh. 11 - If a protein is activated by the addition of a...Ch. 11 - Prob. 9TYKCh. 11 - Prob. 10TYKCh. 11 - From studying the effects of epinephrine on liver...Ch. 11 - You are a Ca2+ ion in a typical animal cell. Where...Ch. 11 - Which of the following molecules is incorrectly...Ch. 11 - Prob. 14TYKCh. 11 - Prob. 15TYK
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- A hormone molecule binds to a receptor on a cell membrane. It doesnt enter the cell; rather, the binding activates a second messenger inside the cell that triggers an amplified response to the hormonal signal. Is the signaling molecule a steroid or a nonsteroid hormone?arrow_forward__________ are molecules released from a signaling cell that have effects on target cells. a. Hormones b. Neurotransmitters c. Local signaling molecules d. Pheromones e. a and b f. all of the abovearrow_forwardOutline the three general means by which binding of a water soluble extracellular chemical messenger to its matching surface membrane receptor brings about the desired intracellular response.arrow_forward
- Using the cAMP signalling pathway as an example, describe the ways in which signalling can be switched on or off at different levels in the pathway . Give examples of two drugs that can affect switching in the pathway, indicating their mechanism of action. Use diagrams to illustrate your answerarrow_forwardPut the steps of the process of G-protein signal transduction in the order (1-4) in which they occur. Second messenger molecules are activated and amplify the signal A signal molecule binds to a receptor on the outside of the cell The alpha (a) subunit of the G-protein inside the cell moves and binds to a nearby enzyme The receptor changes shape, transducing the signal into the cellarrow_forwardWhich of the following is not correct about a second messenger system? A. The activating hormone interacts with a receptor site on the plasma membrane. B. The activating hormone activates an enzyme, most often adenylate cyclase C. Activated adenylate cyclase catalyzes the transformation of AMP to cyclic AMP D. Cyclic AMP causes the activation of protein kinase E. None of these are correct.arrow_forward
- Label the correct steps in G-protein S signaling.arrow_forwardOne molecule of the hormone epinephrine, acting via a G-protein ‹ Adenyl cyclase ‹ cAMP-dependent protein kinase system, is able to cause the release of 108 molecules of glucose from the liver. This is an example of the second-messenger system acting as an ______________arrow_forwardThe secondary messenger cyclic AMP (cAMP) is involved in many different signaling pathways, including the G protein-coupled receptor (GPCR) pathway. Which of the following describes an advantage of using cAMP as a secondary messenger in cell signaling? It conserves energy because cAMP can be converted to ATP. It increases signaling specificity because protein kinase A, the direct effector of cAMP, has few substrates. It prolongs the signal because cAMP is chemically stable and persists for a long time after ligand dissociation. It amplifies the signal because one molecule of activated adenylyl cyclase can produce many molecules of cAMP.arrow_forward
- . Compare and contrast signalling through a ligand-gated ion channel and a G-protein coupled receptor, using specific examples.arrow_forwardCompare and contrast the receptors and signalling cascade, and the physiological roles for two neurotransmitters in the brain Give examplesarrow_forwardSelect any of the regulator mechanisms that would amplify cAMP signaling. A) Cell produces more adenylyl cyclase B) Cell produces more phosphodiesterase C) A drug inhibits phosphodiesterase D) A drug inhibits phospholipasearrow_forward
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Intro to Cell Signaling; Author: Amoeba Sisters;https://www.youtube.com/watch?v=-dbRterutHY;License: Standard youtube license