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Biological Membranes, Membrane Transport,and Cell Signaling Ch. 4 & 5

21 Questions  I  By Jgavila4
Biological Membranes, membrane transport,and cell signaling ch. 4 & 5
Biological transport for zoo 235 cal poly pomona winter 2012. Voss instructor.  

  
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1.  Which of the following describes intracellular fluid?
A.
B.
C.
D.
E.
2.  Which of the following pairs of characteristics is more likely to make a substance diffuse through the cell membrane?
A.
B.
C.
D.
E.
3.  The affinity of a receptor for its ligand is a measure of 
A.
B.
C.
D.
E.
4.  Direct communication between cells in contact with one another is accomplished through 
A.
B.
C.
D.
E.
5.  Referring to a membrane as "selectively permeable" describes its ability to 
A.
B.
C.
D.
6.  Which type of chemical messenger is released from the axon terminal of a neuron and directly communicates with other cells?
A.
B.
C.
D.
E.
7.  When alpha subunit of the G protein is activated, it can stimulate ion channels to
A.
B.
C.
D.
E.
8.  Which of the following transport mechanisms is passive?
A.
B.
C.
D.
E.
9.  Lipophilic hormones transported blood ___ and bind to receptors located _____ . 
A.
B.
C.
D.
E.
10.  Which of the following describes the signal transduction mechanism for estrogen, a steroid horomone? 
A.
B.
C.
D.
E.
11.  Which of the following correctly describes phagocytosis? 
A.
B.
C.
D.
E.
12.  The fluid compartment with high sodium concentration contains only trace amounts of protein is called 
A.
B.
C.
D.
E.
13.  Molecules with a relatively high lipophilicity are capable of crossing membrane ___ 
A.
B.
C.
D.
E.
14.  Primary active transporters are unique in their ability to couple the movement of ions directly to ____ 
A.
B.
C.
D.
E.
15.  Which type of chemcical messenger is released into the bloodstream by an endocrine gland where it can affect target cells throughout the body? 
A.
B.
C.
D.
E.
16.  Which of the following statements best describes the function of a receptor protein-tyrosine kinase?
A.
B.
C.
D.
E.
17.  Which of the following molecules is least likely to cross the plasma membrane?
A.
B.
C.
D.
E.
18.  Oxygen diffuses from the blood cells down its concentration gradient. As cells become more active and oxidative phosphorylation increases in the cell, which of the following occurs?
A.
B.
C.
D.
E.
19.  Which of the following is NOT true for all 3 transport mechanisms : facilitated diffusion, primary active transport, and secondary active transport?  
A.
B.
C.
D.
E.
20.  Which of the following substances crosses a pure lipid bilayer most easily by passive diffusion?
A.
B.
C.
D.
E.
21.  Which of the following will NOT affect the magnitude of a cell's response to a specific hydrophilic ligand? 
A.
B.
C.
D.
E.
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