Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 11.2, Problem 1CC
Nerve growth factor (NGF) is a water-soluble signaling molecule. Would you expect the receptor for NGF to be intracellular or in the plasma membrane? Why?
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Cellular signaling follows a cascade of events and has multiple points of regulation. Which of the following could be a reason(s) why a signalling cascade is interrupted, or turned 'off', once it has been turned 'on'?
A) a protein gets tagged with an ubiqutin group and gets degraded
B) a chemical modification occurred on serine, threonine, or tyrosine side chains to turn on/off proteins
C) allosteric regulation causes an active site to be hidden
D) All of the other answers are correct
E) The ligand is prevented from reaching the binding site
A) Please explain what a G protein coupled receptor is. Please explain how G protein interacts with this receptor.
B) Please explain the kind of reactions that follow binding a specific ligand to a G protein coupled receptor. What do these reactions do in the cell?
C) How do these reactions work in the cell. What is the function of these reactions in the cell? How do the reactions proceed?
You are studying the role of CAMP in cell
signaling. You hypothesize that 2
intracellular signaling proteins, named GO
and TIGERS, interact with each other
when cells are treated with an extracellular
source of CAMP. The two proteins were
tagged with CFP or YFP (CFP = cyan
fluorescent protein; YFP = yellow
fluorescent protein). CFP is excited by 435
nm light and emits lights at 480 nm. YFP
is excited by 480 nm light and emits light
at 535 nm.
400
500
Wavelength of
Emitted Light
400
500
Wavelength of
Emitted Light
600
600
Fluorescence
400
400
500
Wavelength of
Emitted Light
600
500
Wavelength of
Emitted Light
600
Fluorescence
Intensity
400
500
Wavelength of
Emitted Light
600
Figure Legend. A. Cells expressing GO-CFP
irradiate with 435 nm light. B. Cells
expressing TIGERS-YFP and irradiated with
435 nm light. C. Cells expressing TIGERS-
YFP and irradiated with 480 nm light. D.
Cells expressing GO-CFP and TIGERS-YFP
and irradiated with 435 nm light. E. Cells
expressing GO-CFP and…
Chapter 11 Solutions
Campbell Biology (11th Edition)
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 - Nerve growth factor (NGF) is a water-soluble...Ch. 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. 11.5 - 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 - Protein phosphorylation is commonly involved with...Ch. 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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- Outline 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_forwardWhat is the sequence of events that takes place in cell signaling?arrow_forwardPut the following steps for the outline of the growth factor signaling pathway in order: Map Kinase Kinase is Phosphorylated Proteins involved in gene transcription are activated Growth factor binds to its receptor in the cytoplasmic membrane Receptor recruits adaptor protein and GEF Autophosphorylation of tyrosine residues on the receptor Structural change of the receptor activates Tyrosine Kinase Map Kinase Kinase Kinase is phosphorylated Ras, a small GTPase, is activated by the exchange of GTP for GDP Map Kinase is Phosphorylated Map Kinase enters the nucleusarrow_forward
- A cell signaling molecule that triggers an effect only in the vicinity of the cell secreting is is an example of ?arrow_forwardWhat is the main benefit of cell signaling via direct physical contact and cell signaling over short distances (ex: nerve cell signaling)?arrow_forwardCell signaling in plant and animal cells is similar in some ways and different in others. What are some examples of this?arrow_forward
- H e l parrow_forwarda) b) d) You, a Jojo's Bizzare Adventures fan, hear about the upcoming part 6 as an anime. You get very excited to the point where your heart just stops beating and you almost die. You are taken into the hospital and the doctor tells you that Ca2+ is not being released intracellularly, causing your heart to stop contracting. This may be due to which protein? Adenylyl Cyclase Intracellular Docking protein Protein Kinase A Phospholipase Carrow_forwardThe transforming growth factory beta (TGF-b) family of hormones / growth factors are dimers and they interact with specific receptors. Which of the following statements about these receptors is correct? a) A receptor complex is formed from a type 1 and a type 2 receptor b) A receptor complex is formed between the ligand and the receptor c) This family interacts with a single serine- threonine kinase receptor d) The major receptor is intracellular e) The receptor is a G-protein receptorarrow_forward
- Signaling by tyrosine kinase receptors is generally associated with all of the following except: OA) receptor dimerization B) growth factor responses C) heterotrimeric G proteins OD) cross phosphorylation E) generating protein binding sites due to phosphorylationarrow_forwardWhen epidermal growth factor (EGF)—the ligand for the epidermal growth factor receptor (EGFR)—binds EGFR on the cell surface, the intracellular domain of the receptor changes shape into an "active state.” The receptor then induces a cascade of kinases in the cytoplasm, resulting in the activation of mitogen-activated protein kinase (MAPK). One effect of EGFR signaling is the stimulation of cell proliferation. Overactive EGFR is frequently found in cancer cells. One strategy for developing anticancer drugs is to target the overactive signaling proteins found in cancer cells. Antibodies are proteins made by immune cells that only recognize specific biomolecules, called antigens. The major component of an anticancer drug is an antibody that specifically recognizes and binds EGFR. Which of the following will most likely happen when this anticancer drug is applied to a tumor that has a high level of EGFR? Tumor cells with active EGFR will increase and MAPK activity in the tumor will…arrow_forwardGap junctions and tunneling nanotubes are two distinct types of direct intracellular communication. In comparing and contrasting gap junctions and tunneling nanotubes, which of the following statements is true? gap junctions provide a portal for small molecules, proteins and small organelles to move from cell to cell, tunneling nanotubes only permit small molecules to pass between cells typically, there are only two gap junctions that exist between adjacent cells that are communicating via this mechanism; on the other hand, there are many tunneling nanotubes between communicating cells both gap junctions and tunneling nanotubes can pass small molecules between cells none of the above is truearrow_forward
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Intro to Cell Signaling; Author: Amoeba Sisters;https://www.youtube.com/watch?v=-dbRterutHY;License: Standard youtube license