Question 1

If pure water and a solution containing a nonpenetrating solute are separated by a membrane,

Accepted Answer

A)  water will diffuse by osmosis until the concentrations between the two compartments become equal. 
B)  both water and the solute will diffuse across the membrane down their concentration gradients until a state of equilibrium is established. 
C)  water will diffuse by osmosis until stopped by an opposing hydrostatic pressure. 
D)  no movement will take place across the membrane. 
E)  it is impossible to predict what will happen. 
A)  water will diffuse by osmosis until the concentrations between the two compartments become equal. 
B)  both water and the solute will diffuse across the membrane down their concentration gradients until a state of equilibrium is established. 
C)  water will diffuse by osmosis until stopped by an opposing hydrostatic pressure. 
D)  no movement will take place across the membrane. 
E)  it is impossible to predict what will happen.

Question 2

Oxygen enters the blood from the lungs by facilitated diffusion.

Accepted Answer

A) True 
 B)False

Question 3

According to the fluid mosaic model of membrane structure, the plasma membrane consists primarily of a bilayer of mobile phospholipid molecules studded with an ever-changing mosaic pattern of proteins.

Accepted Answer

A) True 
 B)False

Question 4

OTHER
   
The following seven questions are associated with the accompanying figure (above) of the plasma membrane.
-Which structure would interact with a neurotransmitter or hormone?

Accepted Answer

The answer of OTHER
   
The following seven questions...

Question 5

Indicate the various roles of the following ions:
-ion whose equilibrium potential is greater than the resting membrane potential

Accepted Answer

A) Na+ 
B) K+ 
C) A- 
D) Cl- 
A) Na+ 
B) K+ 
C) A- 
D) Cl-

Question 6

The inside free surface of the digestive tract is lined by kinds of ____________________ tissue.

Accepted Answer

The answer of The inside free surface of the digestive...

Question 7

When equilibrium is achieved and no net diffusion is taking place, there is no movement of molecules.

Accepted Answer

A) True 
 B)False

Question 8

The extracellular matrix and the local cells that secrete it are collectively known as connective tissue.

Accepted Answer

A) True 
 B)False

Question 9

Indicate which characteristic of a mediated-transport system is referred to in each item by filling in the blank using the following answer code:
-If the concentration of substance X outside the cell continues to increase but the rate of substance X's transport into the cell remains constant, what characteristic is being exemplified?

Accepted Answer

A) specificity 
B) saturation 
C) competition 
A) specificity 
B) saturation 
C) competition

Question 10

Leak channel:

Accepted Answer

A)  are made from lipids 
B)  are always open 
C)  are specialized glucose channels 
D)  allow sodium to leak out of the cell 
E)  allow potassium to leak into the cell 
A)  are made from lipids 
B)  are always open 
C)  are specialized glucose channels 
D)  allow sodium to leak out of the cell 
E)  allow potassium to leak into the cell

Question 11

Glucose is usually reabsorbed from the filtrate in the kidney back into the blood through carrier proteins, hence, glucose in the urine is considered abnormal. What condition below might result in glucose in the urine?

Accepted Answer

A)  high levels of glucose in the blood. 
B)  transport maximum for renal glucose reached. 
C)  excess consumption of glucose. 
D)  competitors for glucose carriers. 
E)  all of these answers. 
A)  high levels of glucose in the blood. 
B)  transport maximum for renal glucose reached. 
C)  excess consumption of glucose. 
D)  competitors for glucose carriers. 
E)  all of these answers.

Question 12

OTHER
   
The following seven questions are associated with the accompanying figure (above) of the plasma membrane.
-Which structure would allow glucose to pass across the membrane?

Accepted Answer

The answer of OTHER
   
The following seven questions...

Question 13

MATCHING
Match the term to the correct description.
-Provides tensile strength.

Accepted Answer

A) collagen 
B) elastin 
C) fibronectin 
D) fibroblast 
A) collagen 
B) elastin 
C) fibronectin 
D) fibroblast

Question 14

Pinocytosis is a form of

Accepted Answer

A)  active transport. 
B)  cytokinesis. 
C)  endocytosis. 
D)  exocytosis. 
E)  hemolysis. 
A)  active transport. 
B)  cytokinesis. 
C)  endocytosis. 
D)  exocytosis. 
E)  hemolysis.

Question 15

A cell is placed in a hypotonic solution. The cell will

Accepted Answer

A)  lose water by diffusion 
B)  gain water by osmosis 
C)  lose water by exocytosis 
D)  gain water by pinocytosis 
E)  remain unchanged 
A)  lose water by diffusion 
B)  gain water by osmosis 
C)  lose water by exocytosis 
D)  gain water by pinocytosis 
E)  remain unchanged

Question 16

Which of the following allows intercellular movement of ions?

Accepted Answer

A)  watery, gel-like ground substance. 
B)  connexons. 
C)  collagen. 
D)  elastin. 
E)  fibronectin. 
A)  watery, gel-like ground substance. 
B)  connexons. 
C)  collagen. 
D)  elastin. 
E)  fibronectin.

Question 17

OTHER
   
The following seven questions are associated with the accompanying figure (above) of the plasma membrane.
-Which structure is the major obstacle preventing water soluble substances from passing into and out of the cell?

Accepted Answer

The answer of OTHER
   
The following seven questions...

Question 18

____________ are found primarily in sheets of epithelial tissue.

Accepted Answer

The answer of ____________ are found primarily in sheets of...

Question 19

The resting membrane potential is

Accepted Answer

A)  much closer to the equilibrium potential for Na+ than to the equilibrium potential for K+. 
B)  much closer to the equilibrium potential for K+ than to the equilibrium potential for Na+. 
C)  is always -90mV 
D)  both (a) and (c) above. 
E)  both (b) and (c) above. 
A)  much closer to the equilibrium potential for Na+ than to the equilibrium potential for K+. 
B)  much closer to the equilibrium potential for K+ than to the equilibrium potential for Na+. 
C)  is always -90mV 
D)  both (a) and (c) above. 
E)  both (b) and (c) above.

Question 20

Phosphorylation of a carrier can alter the affinity of its binding sites, accompanied by a change in its conformation.

Accepted Answer

A) True 
 B)False

If pure water and a solution containing a nonpenetrating solute are separated by a membrane,

Oxygen enters the blood from the lungs by facilitated diffusion.

According to the fluid mosaic model of membrane structure, the plasma membrane consists primarily of a bilayer of mobile phospholipid molecules studded with an ever-changing mosaic pattern of proteins.

OTHER The following seven questions are associated with the accompanying figure (above) of the plasma membrane. -Which structure would interact with a neurotransmitter or hormone?

Indicate the various roles of the following ions: -ion whose equilibrium potential is greater than the resting membrane potential

The inside free surface of the digestive tract is lined by kinds of ____________________ tissue.

When equilibrium is achieved and no net diffusion is taking place, there is no movement of molecules.

The extracellular matrix and the local cells that secrete it are collectively known as connective tissue.

Leak channel:

Glucose is usually reabsorbed from the filtrate in the kidney back into the blood through carrier proteins, hence, glucose in the urine is considered abnormal. What condition below might result in glucose in the urine?

OTHER The following seven questions are associated with the accompanying figure (above) of the plasma membrane. -Which structure would allow glucose to pass across the membrane?

MATCHING Match the term to the correct description. -Provides tensile strength.

Pinocytosis is a form of

A cell is placed in a hypotonic solution. The cell will

Which of the following allows intercellular movement of ions?

OTHER The following seven questions are associated with the accompanying figure (above) of the plasma membrane. -Which structure is the major obstacle preventing water soluble substances from passing into and out of the cell?

____________ are found primarily in sheets of epithelial tissue.

The resting membrane potential is

Phosphorylation of a carrier can alter the affinity of its binding sites, accompanied by a change in its conformation.

Introduction to Physiology and Homeostasis

Cell Physiology

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division and Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters

Exam 3: The Plasma Membrane and Membrane Potential

If pure water and a solution containing a nonpenetrating solute are separated by a membrane,

Oxygen enters the blood from the lungs by facilitated diffusion.

According to the fluid mosaic model of membrane structure, the plasma membrane consists primarily of a bilayer of mobile phospholipid molecules studded with an ever-changing mosaic pattern of proteins.

OTHER The following seven questions are associated with the accompanying figure (above) of the plasma membrane. -Which structure would interact with a neurotransmitter or hormone?

Indicate the various roles of the following ions: -ion whose equilibrium potential is greater than the resting membrane potential

The inside free surface of the digestive tract is lined by kinds of ____________________ tissue.

When equilibrium is achieved and no net diffusion is taking place, there is no movement of molecules.

The extracellular matrix and the local cells that secrete it are collectively known as connective tissue.

Leak channel:

Glucose is usually reabsorbed from the filtrate in the kidney back into the blood through carrier proteins, hence, glucose in the urine is considered abnormal. What condition below might result in glucose in the urine?

OTHER The following seven questions are associated with the accompanying figure (above) of the plasma membrane. -Which structure would allow glucose to pass across the membrane?

MATCHING Match the term to the correct description. -Provides tensile strength.

Pinocytosis is a form of

A cell is placed in a hypotonic solution. The cell will

Which of the following allows intercellular movement of ions?

OTHER The following seven questions are associated with the accompanying figure (above) of the plasma membrane. -Which structure is the major obstacle preventing water soluble substances from passing into and out of the cell?

____________ are found primarily in sheets of epithelial tissue.

The resting membrane potential is

Phosphorylation of a carrier can alter the affinity of its binding sites, accompanied by a change in its conformation.

Introduction to Physiology and Homeostasis

Cell Physiology

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division and Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters