Content Frame
Note for screen reader users: There is text between the form elements on this page. To be sure that you do not miss any text, use item by item navigation methods, rather than tabbing from form element to form element.
Skip Breadcrumb Navigation
Home  arrow Chapter 4  arrow Self-Study Quiz

Self-Study Quiz

To score your quiz and receive feedback about each question, click the “Submit Answers for Grading” button at the bottom of this page. Click the “Hint” link to find where in your textbook you can find an answer. You can clear your answers with the red “Clear Answers/Start Over” button at the bottom.

This activity contains 20 questions.

Question 1.
___________are specialized protein complexes that create an aqueous pore between the cytoplasms of two adjacent cells.


Open Hint for Question 1 in a new window.
 
End of Question 1


Question 2.
How do most hydrophobic chemical messengers get transported to a target cell?


Open Hint for Question 2 in a new window.
 
End of Question 2


Question 3.
When a chemical messenger (or ligand) reaches a target cell, it binds to a receptor. A hydrophobic ligand binds to a(n)________, whereas a hydrophilic ligand binds to a(n) ___________.


Open Hint for Question 3 in a new window.
 
End of Question 3


Question 4.
The strength of binding between a ligand and a receptor is usually expressed as the


Open Hint for Question 4 in a new window.
 
End of Question 4


Question 5.
A transcription factor is a receptor with three domains: a ligand-binding domain, a DNA-binding domain, and a transactivation domain. What kind of receptor is a transcription factor?


Open Hint for Question 5 in a new window.
 
End of Question 5


Question 6.
How does a ligand-gated ion channel work?


Open Hint for Question 6 in a new window.
 
End of Question 6


Question 7.
Which of the following statements about receptor-enzymes is false?


Open Hint for Question 7 in a new window.
 
End of Question 7


Question 8.
_____________ rely on ___________, such as Ca2+, cyclic GMP, phosphatidylinositol, and cyclic AMP, to activate (or inactivate) a variety of pathways within the cell.


Open Hint for Question 8 in a new window.
 
End of Question 8


Question 9.
Which of the following statements about G-protein signaling pathways is false?


Open Hint for Question 9 in a new window.
 
End of Question 9


Question 10.
The autocrine/paracrine signaling system has a ____________signaling distance and ___________duration of response.


Open Hint for Question 10 in a new window.
 
End of Question 10


Question 11.
Communication among neurons and between neurons and other target cells occurs across short distances at a structure called the __________, a region where the signaling cell and the target cell are very close together.


Open Hint for Question 11 in a new window.
 
End of Question 11


Question 12.
Which of the following is not a chemical class of hormones?


Open Hint for Question 12 in a new window.
 
End of Question 12


Question 13.
Because steroids generally act by _______________, their effects are typically _______________ than the effects of peptide hormones.


Open Hint for Question 13 in a new window.
 
End of Question 13


Question 14.
Norepinephrine, acetylcholine, and serotonin are what kind of hormones?


Open Hint for Question 14 in a new window.
 
End of Question 14


Question 15.
Animals use _____________ cell-to-cell communication to send signals between individuals.


Open Hint for Question 15 in a new window.
 
End of Question 15


Question 16.
_____________ are chemicals released by one animal that cause reactions in another animal of the same species.


Open Hint for Question 16 in a new window.
 
End of Question 16


Question 17.

In a ______________, a sense organ senses the stimulus and sends a signal to the integrating center (e.g., the brain), which sends out a signal via a neuron to an endocrine gland. The endocrine gland releases a hormone into the circulatory system, which carries the hormone to the target organs (e.g., heart, lungs, and muscles).

Open Hint for Question 17 in a new window.
 
End of Question 17


Question 18.
Scientists hypothesize that cell signaling in animals evolved from


Open Hint for Question 18 in a new window.
 
End of Question 18


Question 19.
Which of the following statements related to the evolution of cell signaling is false?


Open Hint for Question 19 in a new window.
 
End of Question 19


Question 20.
What is ecdysone?


Open Hint for Question 20 in a new window.
 
End of Question 20





Pearson Copyright © 1995 - 2010 Pearson Education . All rights reserved. Pearson Benjamin Cummings is an imprint of Pearson .
Legal Notice | Privacy Policy | Permissions

Return to the Top of this Page