Chapter 05 Control of Cells by Chemical Messengers

Chapter 05 Control of Cells by Chemical Messengers

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

Multiple Choice Questions

1. Receptors for intercellular messengers are most commonly
   A.Peripheral membrane proteins
   B. Integral membrane proteins
   C. Specialized phospholipids within the membrane
   D. Nucleic acids

Bloom’s Level: 1. Remember
Section 5.01
Topic: Cells
 

2. Activation of a receptor by a chemical messenger
   A.Occurs when the messenger binds to the ligand-binding site of the receptor
   B. Is the first step leading to the ultimate response of a cell to the messenger
   C. Requires a change in receptor conformation
   D. Both occurs when the messenger binds to the ligand-binding site of the receptor and is the first step leading to the ultimate response of a cell to the messenger are correct
   E. All of the choices are correct

Bloom’s Level: 1. Remember
Section 5.01
Topic: Cells
 

3. Messages, in the form of chemical signals, are sent from one cell to another with only those capable of receiving the specific chemical able to respond to them. Water soluble signals have receptors
   A.On the outside of the cell, constituting a component of the plasma membrane
   B. On the inside of the cell, beyond the boundary of the plasma membrane
   C. Which have a specific structure complementary to the molecular chemical message being sent
   D. Both on the outside of the cell, constituting a component of the plasma membrane and which have a specific structure complementary to the molecular chemical message being sent
   E. Both on the inside of the cell, beyond the boundary of the plasma membrane and which have a specific structure complementary to the molecular chemical message being sent are correct

Bloom’s Level: 1. Remember
Section 5.01
Topic: Cells
 

4. Which of the following are common means by which binding of an intercellular chemical messenger with a cell’s receptor brings about an intracellular response?
   A. Opening or closing of specific ionic channels in the plasma membrane
   B.  Activation of an intracellular second-messenger system
   C.  Promoting or inhibiting the transcription of genes that code for the synthesis of cellular proteins
   D.  Both opening or closing of specific ionic channels in the plasma membrane and activation of an intracellular second-messenger system are correct
   E.  All of the choices are correct

Bloom’s Level: 1. Remember
Section 5.02
Topic: Cells
 

5. Another term for lipid soluble hormones is
   A.Lipophilic
   B. Lipophobic
   C. Hydrophobic
   D. Hydrophilic
   E. polar

Bloom’s Level: 1. Remember
Section 5.02
Topic: Chemistry