ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
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Chapter 5, Problem 3TYU
Phosphorylation cascades involving a series of protein kinases are useful for cellular signal transduction because
- A. they are species specific.
- B. they always lead to the same cellular response.
- C. they amplify the original signal manyfold.
- D. they counter the harmful effects of phosphatases.
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A researcher tested Compound A on chemotaxing cells and measured the relative amount of filamentous actin found in the cells at different times. Based on the researcher’s observations on filamentous actin, what other observation regarding cell chemotaxis was MOST likely observed?
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Chapter 5 Solutions
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
Ch. 5.1 - Plasma membrane proteins have carbohydrates...Ch. 5.1 - WHAT IF? How would the membrane lipid composition...Ch. 5.2 - What property allows O2 and CO2, to cross a lipid...Ch. 5.2 - Why is a transport protein needed to move many...Ch. 5.2 - MAKE CONNECTIONS Aquaporins exclude passage of...Ch. 5.3 - How do you think a cell performing cellular...Ch. 5.3 - WHAT IF? If a Paramecium caudatum cell swims from...Ch. 5.4 - Sodium-potassium pumps help nerve cells establish...Ch. 5.4 - Prob. 2CCCh. 5.4 - MAKE CONNECTIONS Review the characteristics of the...
Ch. 5.5 - As a cell grows, its plasma membrane expands. Does...Ch. 5.5 - Prob. 2CCCh. 5.5 - MAKE CONNECTIONS In Concept 4.7, you learned that...Ch. 5.6 - During an epinephrine-initiated signal in liver...Ch. 5.6 - When a signal transduction pathway involves a...Ch. 5.6 - WHAT IF? How can a target cells response to a...Ch. 5 - In what way do the membranes of a eukaryotic cell...Ch. 5 - Which of the following factors would tend to...Ch. 5 - Phosphorylation cascades involving a series of...Ch. 5 - Lipid-soluble signaling molecules, such as...Ch. 5 - Which of the following processes includes all the...Ch. 5 - Based on Figure 5.17.which of these experimental...Ch. 5 - Prob. 7TYUCh. 5 - SCIENCE, TECHNOLOGY, AND SOCIETY Extensive...Ch. 5 - FOCUS ON EVOLUTION Paramecium and other...Ch. 5 - FOCUS ON INTERACTIONS A human pancreatic cell...Ch. 5 - SYNTHESIZE YOUR KNOWLEDGE In the supermarket,...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- A drug that inhibits the kinase activity of AKT would MOST likely have which of the following effects? A. Increased GSK-3b activity and increased CyclinD synthesis B. Increased GSK-3b activity and decreased CyclinD synthesis C. Decreased GSK-3b activity and increased CyclinD synthesis D. Decrease GSK-3b activity and decreased CyclinD synthesisarrow_forwardWhich of the following signaling mechanisms is not a switch mechanism? a. Changes in phosphorylation state b. Binding of GTP c. Binding of Ca2+ ion d. Protease activityarrow_forwardIn which condition a trimeric G protein is activated by a cell-surface receptor,a. the a subunit exchanges its bound GDP for GTP.b. the B subunit exchanges its bound GDP for GTP.c. the GDP bound to the a subunit is phosphorylated to form bound GTP.d. it dissociates into a free B subunit and an ay subunit.e. it dissociates into an active a subunit and in inactive By subunit.arrow_forward
- The activation of receptor tyrosine kinases is characterized by a. dimerization and phosphorylation b. a phosphorylation cascade c. channel protein shape change d. GTP hydrolysisarrow_forwardFor cellular transduction, why is it useful that phosphorylation cascades have a series of protein kinases? a. they amplify the original signal b. they always lead to the same cellular response c. the number of molecules used is small and fixed d. they are cell specificarrow_forwardMany different cellular processes are regulated by GTP binding proteins - a kind of molecular switch. Their activity is regulated by their GTP/GDP binding status. Select the correct function and activity of Rab-GTP. O A. Rab in its GTP bound state is active and able to participate in vesicle transport B. Rab in its GTP bound state is inactive and prevents vesicle transport O C. Rab in its GTP bound state is active and prevents vesicle transport O D. Rab in its GTP bound state is inactive and able participate in vesicle transportarrow_forward
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- Identify which of the following statements is a lie? Select one: a. A signalling pathway called MAPK/ERK pathway regulates protein translation. b. 2. Two enzymes are phosphorylated by protein kinase A. c. Under normal conditions, cells can divide even without signals from other cells.arrow_forwardA hormone signals through a G protein-coupled receptor as shown in the diagram. After the production of IP3, which of these events will MOST quickly stop the transduction of the signal? A. the hydrolysis of IP3 B. the hydrolysis of GTP C. the hydrolysis of PIP2 D. the hydrolysis of the hormone I believe the answer is (B) the hydrolysisof GTP, because the G protein becomes inactive after GTP is hydrolyzed to GDP. However, the solution provided by Bartleby is (C). Please explain. Thanksarrow_forwardThe hypothesis for the experiment shown in the picture  is that the TamC3 and TamR3 cell lines function, and grow the absence of estrogen, receptor function. Reduced reliance on estrogen, receptor signaling alters mTOR pathway activity. If this hypothesis is true, then mediators of mTOR signaling (Akt or p70S6K) should have reduced levels of phosphorylation . A. Where would you look to see this? B. To what degree does the data in the picture support the hypothesis?arrow_forward
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