Question 1

Opening a gated channel that allows Na+ to diffuse through the plasma membrane would cause the membrane potential to increase.

Accepted Answer

A) True 
 B)False

Question 2

Describe the various functions of proteins in membranes.

Accepted Answer

The different types of proteins in the p

Question 3

Fibronectin is a strong carbohydrate in the extracellular matrix of connective tissues that holds adjacent cells together.

Accepted Answer

A) True 
 B)False

Question 4

The concentration gradient for

Accepted Answer

A)  K+ favors its movement into the ECF 
B)  Na+ favors its movement out of the cytosol 
C)  K+ and Na+ are maintained by active transport 
D)  all of these 
E)  none of these 
A)  K+ favors its movement into the ECF 
B)  Na+ favors its movement out of the cytosol 
C)  K+ and Na+ are maintained by active transport 
D)  all of these 
E)  none of these

Question 5

Carriers that perform facilitated diffusion or secondary active transport of glucose do not split ATP.

Accepted Answer

A) True 
 B)False

Question 6

Complete each of the following statments.
In facilitated diffusion, particles move from a(n) ____________________ concentration to a(n) ____________________ concentration.

Accepted Answer

The answer of Complete each of the following statments.
In facilitated...

Question 7

Which of the following is not a function of membrane proteins?

Accepted Answer

A)  transport of polar molecules 
B)  transport of H+ into the cell 
C)  binding sites for vesicles 
D)  cell recognition 
E)  passageway for water molecules 
A)  transport of polar molecules 
B)  transport of H+ into the cell 
C)  binding sites for vesicles 
D)  cell recognition 
E)  passageway for water molecules

Question 8

Some carrier molecules do not require energy to accomplish transport of a substance across the membrane.

Accepted Answer

A) True 
 B)False

Question 9

Use the figure above to answer the corresponding questions.
Which protein could be associated with active movement of a substance through the membrane?
  a. 1
b. 2
c. 3
d. 4
e. 5

Accepted Answer

The answer of Use the figure above to answer the...

Question 10

Which of the following is not a function of membrane proteins?

Accepted Answer

A)  Some act as channels. 
B)  They determine the fluidity of the membrane. 
C)  Some will transport glucose. 
D)  They include docking-marker acceptors. 
E)  Some act as enzymes. 
A)  Some act as channels. 
B)  They determine the fluidity of the membrane. 
C)  Some will transport glucose. 
D)  They include docking-marker acceptors. 
E)  Some act as enzymes.

Question 11

Which of the following is not part of the extracellular matrix?

Accepted Answer

A)  complex carbohydrates 
B)  connexons 
C)  collagen 
D)  elastin 
E)  fibronectin 
A)  complex carbohydrates 
B)  connexons 
C)  collagen 
D)  elastin 
E)  fibronectin

Question 12

Complete each of the following statments.
____________________ refers to the transfer of a phosphate group from ATP to a protein, thereby bringing about a change in the shape and function of the protein.

Accepted Answer

The answer of Complete each of the following statments.
____________________ refers...

Question 13

Receptor sites on the outer surface of the plasma membrane are made of

Accepted Answer

A)  CAMs 
B)  carbohydrate 
C)  lipid 
D)  keratin 
E)  proteins 
A)  CAMs 
B)  carbohydrate 
C)  lipid 
D)  keratin 
E)  proteins

Question 14

Use the figure above to answer the corresponding questions.
Which step will come immediately after the carrier releases the ions shown in this figure?
  
a.	The carrier will become phosphorylated.
b.	The carrier will pick up ions from the ECF.
c.	The carrier will pick up ions from the ICF.
d.	The carrier will split ATP.
e.	The carrier will become phosphorylated and The carrier will split ATP.

Accepted Answer

The answer of Use the figure above to answer the...

Question 15

Connexons are carbohydrate building blocks of gap junctions that allow ions to pass from the cytosol of one cell into the cytosol of an adjacent cell.

Accepted Answer

A) True 
 B)False

Question 16

Molecules greater than 0.8 nm in diameter are unable to pass from the ECF into the cytosol unless there is a carrier for the molecule.

Accepted Answer

A) True 
 B)False

Question 17

According to the fluid mosaic model, 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 18

Because a solution of lower solute concentration has a higher concentration of water, it exerts a lower osmotic pressure than does a solution with a higher solute concentration.

Accepted Answer

A) True 
 B)False

Question 19

The hydrophobic interior of the lipid bilayer of the plasma membrane blocks the passage of water-soluble substances.

Accepted Answer

A) True 
 B)False

Question 20

Describe how an ATP is important to the SGLT carrier.

Accepted Answer

Since the SGLT is a secondary active tra

Exam 3: The Plasma Membrane and Membrane Potential

Opening a gated channel that allows Na+ to diffuse through the plasma membrane would cause the membrane potential to increase.

Describe the various functions of proteins in membranes.

Fibronectin is a strong carbohydrate in the extracellular matrix of connective tissues that holds adjacent cells together.

The concentration gradient for

Carriers that perform facilitated diffusion or secondary active transport of glucose do not split ATP.

Complete each of the following statments. In facilitated diffusion, particles move from a(n) ____________________ concentration to a(n) ____________________ concentration.

Which of the following is not a function of membrane proteins?

Some carrier molecules do not require energy to accomplish transport of a substance across the membrane.

Use the figure above to answer the corresponding questions. Which protein could be associated with active movement of a substance through the membrane? a. 1 b. 2 c. 3 d. 4 e. 5

Which of the following is not a function of membrane proteins?

Which of the following is not part of the extracellular matrix?

Complete each of the following statments. ____________________ refers to the transfer of a phosphate group from ATP to a protein, thereby bringing about a change in the shape and function of the protein.

Receptor sites on the outer surface of the plasma membrane are made of

Connexons are carbohydrate building blocks of gap junctions that allow ions to pass from the cytosol of one cell into the cytosol of an adjacent cell.

Molecules greater than 0.8 nm in diameter are unable to pass from the ECF into the cytosol unless there is a carrier for the molecule.

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

Because a solution of lower solute concentration has a higher concentration of water, it exerts a lower osmotic pressure than does a solution with a higher solute concentration.

The hydrophobic interior of the lipid bilayer of the plasma membrane blocks the passage of water-soluble substances.

Describe how an ATP is important to the SGLT carrier.

Introduction to Physiology and Homeostasis

Cell Physiology

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

Opening a gated channel that allows Na⁺ to diffuse through the plasma membrane would cause the membrane potential to increase.

Complete each of the following statments. In facilitated diffusion, particles move from a(n) concentration to a(n) concentration.