Question 1

Match each sentence with the most appropriate choice:
-Hydrostatic pressure

Accepted Answer

A)  Potocytosis 
B)  secretion 
C)  ATP 
D)  PIP10 
E)  cAMP
F) DAG
G) Ca2+
H) equilibrium potential
I) cell volume
J) receptor 
A)  Potocytosis 
B)  secretion 
C)  ATP 
D)  PIP10 
E)  cAMP
F) DAG
G) Ca2+
H) equilibrium potential
I) cell volume
J) receptor I

Question 2

From a structural standpoint, integral membrane proteins are most similar to which membrane lipids?

Accepted Answer

A)  cholesterol 
B)  phospholipids 
C)  neutral lipids 
D)  polyunsaturated fatty acids. 
E)  none of these. 
A)  cholesterol 
B)  phospholipids 
C)  neutral lipids 
D)  polyunsaturated fatty acids. 
E)  none of these. B

Question 3

Match each sentence with the most appropriate choice:
-Caveloae

Accepted Answer

A)  Potocytosis 
B)  secretion 
C)  ATP 
D)  PIP2 
E)  cAMP
F) DAG
G) Ca2+
H) equilibrium potential
I) cell volume
J) receptor 
A)  Potocytosis 
B)  secretion 
C)  ATP 
D)  PIP2 
E)  cAMP
F) DAG
G) Ca2+
H) equilibrium potential
I) cell volume
J) receptor A

Question 4

Why is the chemical composition of a cell's cytoplasm so critical to its survival in the body?

Accepted Answer

The chemical composition of a cell's cyt

Question 5

Match each sentence with the most appropriate choice:
-Calmodulin

Accepted Answer

A)  Potocytosis 
B)  secretion 
C)  ATP 
D)  PIP8 
E)  cAMP
F) DAG
G) Ca2+
H) equilibrium potential
I) cell volume
J) receptor 
A)  Potocytosis 
B)  secretion 
C)  ATP 
D)  PIP8 
E)  cAMP
F) DAG
G) Ca2+
H) equilibrium potential
I) cell volume
J) receptor

Question 6

The term membrane potential means that the separated ions have the ability to do work.

Accepted Answer

A) True 
 B)False

Question 7

Describe an experiment that would enable you to test whether a specific ion was
 important in determining the membrane potential for a specific cell.

Accepted Answer

To test whether a specific ion is import

Question 8

The equilibrium potential for most neurons is around -70mV. The maintenance of this potential is an example of

Accepted Answer

A)  equilibrium. 
B)  homeostasis. 
C)  steady state. 
D)  both equilibrium and homeostasis. 
E)  both homeostasis and steady state. 
A)  equilibrium. 
B)  homeostasis. 
C)  steady state. 
D)  both equilibrium and homeostasis. 
E)  both homeostasis and steady state.

Question 9

A semipermeable membrane encloses a solution of 10 mM NaCl and 5 mM KCl. This "cell" is placed into a solution of 6 mM CaCl2 and 6 mM NaCl.

Accepted Answer

A)  The "cell" will be hypertonic to the surrounding solution. 
B)  The "cell" will be isotonic to the surrounding solution. 
C)  The "cell will be hypotonic to the surrounding solution. 
D)  The "cell" has a lower hydrostatic pressure than the surrounding solution. 
E)  Not enough information is provided to answer the question. 
A)  The "cell" will be hypertonic to the surrounding solution. 
B)  The "cell" will be isotonic to the surrounding solution. 
C)  The "cell will be hypotonic to the surrounding solution. 
D)  The "cell" has a lower hydrostatic pressure than the surrounding solution. 
E)  Not enough information is provided to answer the question.

Question 10

One advantage of signaling pathways involving the generation of second messengers has compared to a signaling pathway that utilizes the influx of ions is

Accepted Answer

A)  the former are much faster in terms of generating cellular responses to first messengers. 
B)  the former are slower in terms of generating cellular responses, allowing cells to be more circumspect in their response to chemical signals. 
C)  the former require less first messenger to elicit a response, since they allow for signal amplification. 
D)  the former require more first messenger to elicit a response, allowing for more rapid termination of the signaling event. 
E)  none of these. 
A)  the former are much faster in terms of generating cellular responses to first messengers. 
B)  the former are slower in terms of generating cellular responses, allowing cells to be more circumspect in their response to chemical signals. 
C)  the former require less first messenger to elicit a response, since they allow for signal amplification. 
D)  the former require more first messenger to elicit a response, allowing for more rapid termination of the signaling event. 
E)  none of these.

Question 11

Secondary active transport relies on an ion concentration gradient.

Accepted Answer

A) True 
 B)False

Question 12

Glycoproteins are found only on the outer surface of membranes.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following animals would you expect to have the most unsaturated fatty acyl chains in the plasma membranes of its cells?

Accepted Answer

A)  arctic fish 
B)  penguins 
C)  polar bears 
D)  tropical fish 
E)  pelicans 
A)  arctic fish 
B)  penguins 
C)  polar bears 
D)  tropical fish 
E)  pelicans

Question 14

Histamine is an example of an autocrine signaling molecule.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following statements is true?

Accepted Answer

A)  Tonicity refers to the effect of penetrating solutes on cell volume. 
B)  A one molal solution contains 1 mole of solute per liter of solution. 
C)  To accommodate larger molecules, membrane channels have an average diameter of 1 - 1.5 nanometers. 
D)  Carrier proteins span the membrane and can undergo shape changes. 
E)  Aquaporins regulate solute movement across membranes. 
A)  Tonicity refers to the effect of penetrating solutes on cell volume. 
B)  A one molal solution contains 1 mole of solute per liter of solution. 
C)  To accommodate larger molecules, membrane channels have an average diameter of 1 - 1.5 nanometers. 
D)  Carrier proteins span the membrane and can undergo shape changes. 
E)  Aquaporins regulate solute movement across membranes.

Question 16

Which of the following statements about the plasma membrane is true?

Accepted Answer

A)  The plasma membrane is symmetrical (on average) around the plane between the inner and outer halves. 
B)  The carbohydrate portion of glycoproteins is only found on the part of the protein facing the cytoplasm. 
C)  The carbohydrate portion of glycoproteins is only found on the part of the protein facing the extracellular fluid. 
D)  The carbohydrate portion of glycoproteins is found on both the extracellular facing and intracellular facing part of the protein. 
E)  There are no glycoproteins in the plasma membrane. 
A)  The plasma membrane is symmetrical (on average) around the plane between the inner and outer halves. 
B)  The carbohydrate portion of glycoproteins is only found on the part of the protein facing the cytoplasm. 
C)  The carbohydrate portion of glycoproteins is only found on the part of the protein facing the extracellular fluid. 
D)  The carbohydrate portion of glycoproteins is found on both the extracellular facing and intracellular facing part of the protein. 
E)  There are no glycoproteins in the plasma membrane.

Question 17

Which of the following pairs have NO relationship?

Accepted Answer

A)  Secondary active transport and cotransport carriers. 
B)  Symporters and cotransport carriers. 
C)  Na+-K+ pump and ouabain. 
D)  Caveolae and cell transport. 
E)  Osmosis and carrier mediated transport. 
A)  Secondary active transport and cotransport carriers. 
B)  Symporters and cotransport carriers. 
C)  Na+-K+ pump and ouabain. 
D)  Caveolae and cell transport. 
E)  Osmosis and carrier mediated transport.

Question 18

Match each sentence with the most appropriate choice:
-AC

Accepted Answer

A)  Potocytosis 
B)  secretion 
C)  ATP 
D)  PIP4 
E)  cAMP
F) DAG
G) Ca2+
H) equilibrium potential
I) cell volume
J) receptor 
A)  Potocytosis 
B)  secretion 
C)  ATP 
D)  PIP4 
E)  cAMP
F) DAG
G) Ca2+
H) equilibrium potential
I) cell volume
J) receptor

Question 19

Phospholipids are able to form bilayer membranes in aqueous environments because

Accepted Answer

A)  they have hydrophobic heads and hydrophilic tails. 
B)  they have polar heads and nonpolar tails. 
C)  they have polar tails and nonpolar heads. 
D)  the phospho-portion can form phosphodiester bonds between adjacent phospholipids. 
E)  two of these. 
A)  they have hydrophobic heads and hydrophilic tails. 
B)  they have polar heads and nonpolar tails. 
C)  they have polar tails and nonpolar heads. 
D)  the phospho-portion can form phosphodiester bonds between adjacent phospholipids. 
E)  two of these.

Question 20

Which of the following statements about the lipid bilayer portion of the plasma membrane is FALSE?

Accepted Answer

A)  Some membrane phospholipids form transmembrane channels that allow ion movement. 
B)  The lipid bilayer defines the boundaries of the cell. 
C)  The lipid bilayer forms a permeability barrier to polar and charged substances. 
D)  The lipid bilayer confers fluidity to the plasma membrane. 
E)  All of the above statements are true. 
A)  Some membrane phospholipids form transmembrane channels that allow ion movement. 
B)  The lipid bilayer defines the boundaries of the cell. 
C)  The lipid bilayer forms a permeability barrier to polar and charged substances. 
D)  The lipid bilayer confers fluidity to the plasma membrane. 
E)  All of the above statements are true.

Match each sentence with the most appropriate choice: -Hydrostatic pressure

From a structural standpoint, integral membrane proteins are most similar to which membrane lipids?

Match each sentence with the most appropriate choice: -Caveloae

Why is the chemical composition of a cell's cytoplasm so critical to its survival in the body?

Match each sentence with the most appropriate choice: -Calmodulin

The term membrane potential means that the separated ions have the ability to do work.

Describe an experiment that would enable you to test whether a specific ion was important in determining the membrane potential for a specific cell.

The equilibrium potential for most neurons is around -70mV. The maintenance of this potential is an example of

A semipermeable membrane encloses a solution of 10 mM NaCl and 5 mM KCl. This "cell" is placed into a solution of 6 mM CaCl₂ and 6 mM NaCl.

One advantage of signaling pathways involving the generation of second messengers has compared to a signaling pathway that utilizes the influx of ions is

Secondary active transport relies on an ion concentration gradient.

Glycoproteins are found only on the outer surface of membranes.

Which of the following animals would you expect to have the most unsaturated fatty acyl chains in the plasma membranes of its cells?

Histamine is an example of an autocrine signaling molecule.

Which of the following statements is true?

Which of the following statements about the plasma membrane is true?

Which of the following pairs have NO relationship?

Match each sentence with the most appropriate choice: -AC

Phospholipids are able to form bilayer membranes in aqueous environments because

Which of the following statements about the lipid bilayer portion of the plasma membrane is FALSE?

Homeostasis and Integration: The Foundations of Physiology

Cellular and Molecular Physiology

Neuronal Physiology

Nervous Systems

Sensory Physiology

Endocrine Systems

Muscle Physiology

Circulatory Systems

Defense Systems

Respiratory Systems

Excretory Systems

Fluid and Acid-Base Balance

Digestive Systems

Energy Balance and Thermal Physiology

Reproductive Systems

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Exam 3: Membrane Physiology

Match each sentence with the most appropriate choice: -Hydrostatic pressure

From a structural standpoint, integral membrane proteins are most similar to which membrane lipids?

Match each sentence with the most appropriate choice: -Caveloae

Why is the chemical composition of a cell's cytoplasm so critical to its survival in the body?

Match each sentence with the most appropriate choice: -Calmodulin

The term membrane potential means that the separated ions have the ability to do work.

Describe an experiment that would enable you to test whether a specific ion was important in determining the membrane potential for a specific cell.

The equilibrium potential for most neurons is around -70mV. The maintenance of this potential is an example of

A semipermeable membrane encloses a solution of 10 mM NaCl and 5 mM KCl. This "cell" is placed into a solution of 6 mM CaCl2 and 6 mM NaCl.

One advantage of signaling pathways involving the generation of second messengers has compared to a signaling pathway that utilizes the influx of ions is

Secondary active transport relies on an ion concentration gradient.

Glycoproteins are found only on the outer surface of membranes.

Which of the following animals would you expect to have the most unsaturated fatty acyl chains in the plasma membranes of its cells?

Histamine is an example of an autocrine signaling molecule.

Which of the following statements is true?

Which of the following statements about the plasma membrane is true?

Which of the following pairs have NO relationship?

Match each sentence with the most appropriate choice: -AC

Phospholipids are able to form bilayer membranes in aqueous environments because

Which of the following statements about the lipid bilayer portion of the plasma membrane is FALSE?

Homeostasis and Integration: The Foundations of Physiology

Cellular and Molecular Physiology

Neuronal Physiology

Nervous Systems

Sensory Physiology

Endocrine Systems

Muscle Physiology

Circulatory Systems

Defense Systems

Respiratory Systems

Excretory Systems

Fluid and Acid-Base Balance

Digestive Systems

Energy Balance and Thermal Physiology

Reproductive Systems

Filters

A semipermeable membrane encloses a solution of 10 mM NaCl and 5 mM KCl. This "cell" is placed into a solution of 6 mM CaCl₂ and 6 mM NaCl.