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AP Bio Ch. 11 Study Guide Test Your Knowledge

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
What is the key difference between a local regulator and a hormone?
a.
.
b.
.
c.
.
d.
.
e.
.
 

 2. 
Which type of the following substances is used in the type of local signaling called paracrine signaling in animals.
a.
.
b.
.
c.
.
d.
.
e.
.
 

 3. 
A signal molecule that binds to a plasma membrane protein receptor functions as a
a.
.
b.
.
c.
.
d.
.
e.
.
 

 4. 
A G protein is
a.
.
b.
.
c.
.
d.
.
e.
.
 

 5. 
How do receptor tyrosine kinases transduce a signal?
a.
.
b.
.
c.
.
d.
.
e.
.
 

 6. 
Many human diseases (including bacterial infections) and the medicines used to treat them produce their effects by influencing which of the following ?
a.
.
b.
.
c.
.
d.
.
e.
.
 

 7. 
Which of the following compounds can activate a protein by transferring a phosphate group to it?
a.
.
b.
.
c.
.
d.
.
e.
.
 

 8. 
Many signal transduction pathways use second messengers to
a.
.
b.
.
c.
.
d.
.
e.
.
 

 9. 
A function of the second messenger IP3 is to
a.
.
b.
.
c.
.
d.
.
e.
.
 

 10. 
Signal amplification is most often achieved by
a.
.
b.
.
c.
.
d.
.
e.
.
 

 11. 
From studying the effects of epinephrine on liver cells, Sutherland concluded that
a.
.
b.
.
c.
.
d.
.
e.
.
 

 12. 
Which of the following characteristics is a similarity between G protein-coupled receptors and receptor tyrosine kinases?
a.
.
b.
.
c.
.
d.
.
e.
.
 

 13. 
Which of the following molecules is incorrectly matched with its description?
a.
.
b.
.
c.
.
d.
.
e.
.
 

 14. 
When epinephrine binds to cardiac (heart) muscle cells, it speeds their contraction. When it binds to muscle cells of the small intestine, it inhibits their contraction. How can the same hormone have different effects on muscle cells?
a.
.
b.
.
c.
.
d.
.
e.
.
 

 15. 
The gene ced-9 codes for a protein that inactivates the proteins of suicide genes found in C. elegans. For development to proceed normally, ced-9
a.
.
b.
.
c.
.
d.
.
e.
.
 



 
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