EP CAMPBELL BIO.IN FOCUS AP-MOD.MASTER.
3rd Edition
ISBN: 9780137453092
Author: Urry
Publisher: SAVVAS L
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Chapter 5, Problem 4TYU
Lipid-soluble signaling molecules, such as aldosterone, cross the membranes of all cells but affect only target cells because
- A. only target cells retain the appropriate DNA segments.
- B. intracellular receptors are present only in target cells.
- C. only target cells have enzymes that break down aldosterone.
- D. only in target cells is aldosterone able to initiate the phosphorylation cascade that turns genes on.
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Students have asked these similar questions
A cell has epinephrine receptors, yet is unable to respond to epinephrine signaling. One possible reason is:
A.
The cell has no DNA.
B.
The cell is missing a functional G-protein or adenylyl cyclase.
C.
All of the epinephrine receptors are on the cell’s surface. (They’re supposed to be in the cytoplasm!)
D.
Both A and C.
EGF signals by binding to cell surface EGF receptors. Which of these observations, if true, would BEST explain EGF’s mechanism of action?
A. EGF is hydrophilic and can easily diffuse through the cell membrane
B. EGF is hydrophobic and can easily diffuse through the cell membrane
C. EGF is hydrophilic and cannot diffuse through the cell membrane
D. EGF is hydrophobic and cannot diffuse through the cell membrane
Consider this pathway: epinephrine --> receptor -->G-protein---> Adenyl Cyclase---> cAMP --> protein kinase --> transcription factors. Identify the effector.
A.
cAMP
B.
G protein-coupled receptor
C.
epinephrine
D.
adenyl cyclase
Which statement is not true about G proteins?
A.
They are integral membrane proteins.
B.
They are slowly inactivated by their own GTPase activity.
C.
They are multisubunit proteins consisting of α, β and γ subunits.
D.
They act as transducers for hormones
Chapter 5 Solutions
EP CAMPBELL BIO.IN FOCUS AP-MOD.MASTER.
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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