Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 9, Problem 35CTQ
Why is signaling in multicellular organisms more complicated than signaling in single-celled organisms?
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What is the benefit of using second messangers and phosphorylation cascades during the transduction step of cell signaling?
Chapter 9 Solutions
Biology 2e
Ch. 9 - Figure 9.8 HER2 is a receptor tyrosine kinase. In...Ch. 9 - Figure 9.10 In certain cancers, the GTPase...Ch. 9 - Figure 9.17 Which of the following statements...Ch. 9 - Figure 9.18 What advantage might biofilm...Ch. 9 - What property prevents the ligands of cell-surface...Ch. 9 - The secretion of hormones by the pituitary gland...Ch. 9 - Why are ion channels necessary to transport ions...Ch. 9 - Endocrine signals are transmitted more slowly than...Ch. 9 - A scientist notices that when she adds a small,...Ch. 9 - Where do DAG and IP3 originate? They are formed by...
Ch. 9 - What property enables the residues of the amino...Ch. 9 - Histamine binds to the H1 G-protein-linked...Ch. 9 - A scientist observes a mutation in the...Ch. 9 - What is the function of a phosphatase? A...Ch. 9 - How does NF-kB induce gene expression? A small,...Ch. 9 - Apoptosis can occur in a cell when the cell is...Ch. 9 - What is the effect of an inhibitor binding an...Ch. 9 - How does PKC’s signaling role change in response...Ch. 9 - A scientist notices that a cancer cell line fails...Ch. 9 - Which type of molecule acts as a signaling...Ch. 9 - Quorum sensing is triggered to begin when...Ch. 9 - A doctor is researching new ways to treat biofilms...Ch. 9 - What is the difference between intracellular...Ch. 9 - How are the effects of paracrine signaling limited...Ch. 9 - What are the differences between internal...Ch. 9 - Cells grown in the laboratory are mixed with a dye...Ch. 9 - Insulin is a hormone that regulates blood sugar by...Ch. 9 - The same second messengers are used in many...Ch. 9 - What would happen if the intracellular domain of a...Ch. 9 - If a cell developed a mutation in its MAP2K1 gene...Ch. 9 - What is a possible result of a mutation in a...Ch. 9 - How does the extracellular matrix control the...Ch. 9 - A scientist notices that a cancer cell line shows...Ch. 9 - What characteristics make yeasts a good model for...Ch. 9 - Why is signaling in multicellular organisms more...Ch. 9 - Pseudomonas infections are very common in hospital...
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- How is an extracellular signal converted to an intracellular signal in signal transduction? Give a specific example.arrow_forwardWhat distinguishes a steroid receptor from a receptor tyrosine kinase receptor or a G-protein-coupled receptor?arrow_forwardWhat is signal messengers? What is a protein receptor? What is its function? What are the signaling steps? Please describe each step? What is the response step of signaling?arrow_forward
- Why can acetylcholine (or other signaling molecules) have so many different effects?arrow_forwardHow would you expect intracellular signaling to be altered in cells that have been infected with cholera compared to non-infected cells?arrow_forwardWhat is a second messenger in cell signaling, and what kinds of molecules can act as second messengers?arrow_forward
- What common features are shared by most cell signaling systems?arrow_forwardWhat type of cell signaling receptor is depicted below a. Cytoplasmic Receptor b. Transmembrane Receptor c. Intracellular Receptor d. Nuclear Receptorarrow_forwardWhat are the three main parts of a signaling pathway? Give a detailed specific example, such as how epinephrine signals for rapid digestion of glycogen in liver cells.arrow_forward
- What is the response step of signaling?arrow_forwardWhat are the two major mechanisms through which cell signaling leads to a change in cell behavior?arrow_forwardBriefly explain how integrin inside-out and outside-in signaling is different structurally and functionally? (hint: explain what happened to ligand binding and conformation)arrow_forward
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