Question 1

Anionic intracellular proteins (A⁻) cannot pass through membrane carriers because A⁻ proteins

Accepted Answer

A) are charged 
B) they can only pass through channels 
C) are in about the same concentration in the cytosol and ECF 
D) too large 
E) are synthesized outside the cell, and carriers only transport them into the cell 
A) are charged 
B) they can only pass through channels 
C) are in about the same concentration in the cytosol and ECF 
D) too large 
E) are synthesized outside the cell, and carriers only transport them into the cell

Question 2

If a typical body cell is placed into a 1% saline solution, the cell

Accepted Answer

A) will gain more water than it loses. 
B) will have a higher osmotic pressure than the ECF. 
C) will have a lower hydrostatic pressure than the ECF. 
D) will gain and lose water at the same rate. 
E) will have a lower osmolarity than the saline solution. 
A) will gain more water than it loses. 
B) will have a higher osmotic pressure than the ECF. 
C) will have a lower hydrostatic pressure than the ECF. 
D) will gain and lose water at the same rate. 
E) will have a lower osmolarity than the saline solution.

Question 3

Indicate whether the force in question tends to move the involved ion into or out of the cell by filling in the blank using the following code.
a.tends to move the ion into the cell
b.tends to move out of the cell
-Electrical gradient for K⁺ at EK⁺

Accepted Answer

The answer of Indicate whether the force in question tends...

Question 4

Net diffusion of water down its own concentration gradient toward an area of higher solute concentration is known as ____________________.

Accepted Answer

The answer of Net diffusion of water down its own...

Question 5

Identify the true statement(s) about the plasma membrane.

Accepted Answer

A) Its transmembrane proteins are also peripheral proteins. 
B) Its glycocalyx functions in cell recognition. 
C) Its carriers contain cholesterol. 
D) Its channels allow passage of substances between 0.8 nm and 1 nm in diameter. 
E) Its transmembrane proteins are also peripheral proteins, and its channels allow passage of substances between 0.8 nm and 1 nm in diameter. 
A) Its transmembrane proteins are also peripheral proteins. 
B) Its glycocalyx functions in cell recognition. 
C) Its carriers contain cholesterol. 
D) Its channels allow passage of substances between 0.8 nm and 1 nm in diameter. 
E) Its transmembrane proteins are also peripheral proteins, and its channels allow passage of substances between 0.8 nm and 1 nm in diameter.

Question 6

What is primarily responsible for the development of a resting membrane potential?

Accepted Answer

A) More diffusion and active transport of cations out of the cell than into the cell 
B) Pumping 2 K+ ions out of the cell for every three Na+ ions pumped into the cell 
C) More K+ ions diffusing into the cell than there are Na+ ions diffusing out of the cell 
D) More anions diffusing into the cell than are diffusing out of the cell 
E) None of the above are primarily responsible. 
A) More diffusion and active transport of cations out of the cell than into the cell 
B) Pumping 2 K+ ions out of the cell for every three Na+ ions pumped into the cell 
C) More K+ ions diffusing into the cell than there are Na+ ions diffusing out of the cell 
D) More anions diffusing into the cell than are diffusing out of the cell 
E) None of the above are primarily responsible.

Question 7

The following questions refer to comparative concentrations, permeabilities, and potentials under various circumstances.Indicate the relationship between the two items listed in each situation using the following answer code.
a.A is greater than B
b.B is greater than A
c.A and B are equal
-a.concentration of A⁻ in the ECF
B.concentration of A⁻ in the ICF

Accepted Answer

The answer of The following questions refer to comparative concentrations,...

Question 8

____ are adhering junctions, ____ are impermeable junctions, and ____ are communicating junctions.

Accepted Answer

A) Tight junctions, gap junctions, desmosomes 
B) Desmosomes, gap junctions, tight junctions 
C) Gap junctions, desmosomes, tight junctions 
D) Gap junctions, tight junctions, desmosomes 
E) Desmosomes, tight junctions, gap junctions 
A) Tight junctions, gap junctions, desmosomes 
B) Desmosomes, gap junctions, tight junctions 
C) Gap junctions, desmosomes, tight junctions 
D) Gap junctions, tight junctions, desmosomes 
E) Desmosomes, tight junctions, gap junctions

Question 9

Dephosphorylation of the Na⁺-K⁺ pump causes three Na⁺ ions to move out of a cell against a concentration gradient.

Accepted Answer

A) True 
 B)False

Question 10

Cell adhesion proteins (CAMs) include ____________________ and ____________________.

Accepted Answer

cadherins,

Question 11

Indicate which characteristic of a mediated-transport system is referred to in each item by filling in the blank using the following answer code.
a.specificity
b.saturation
c.competition
-The concentration of substance X outside the cell continues to increase but the rate of substance X's transport into the cell remains constant.

Accepted Answer

The answer of Indicate which characteristic of a mediated-transport system...

Question 12

Use the figure above to answer the corresponding questions.
-Describe the transport of glucose out of an intestinal cell and into the blood.

Accepted Answer

Glucose is transported from the intestin

Question 13

In many cells, the hormone called ____________________ promotes the insertion of glucose carriers into the plasma membranes.

Accepted Answer

The answer of In many cells, the hormone called ____________________...

Question 14

The following questions refer to comparative concentrations, permeabilities, and potentials under various circumstances.Indicate the relationship between the two items listed in each situation using the following answer code.
a.A is greater than B
b.B is greater than A
c.A and B are equal
-a.concentration of K⁺ in the ECF
B.concentration of K⁺ in the ICF

Accepted Answer

The answer of The following questions refer to comparative concentrations,...

Question 15

Of the lipids in the plasma membrane, ____________________ are most abundant, with lesser amounts of ____________________.

Accepted Answer

phospholip

Question 16

Solution 1 has a higher concentration of NaCl than solution 2.A membrane permeable only to Na⁺ and water separates the two membranes.Which of the following is true?

Accepted Answer

A) Na+ will diffuse into solution 2 until the two solutions become isotonic. 
B) Solution 2 has a higher osmolarity. 
C) A membrane potential will develop, with the negative side being in solution 1. 
D) Solution 2 will gain water from solution 1. 
E) Eventually, solution 2 will contain only Na+ and solution 1 will contain only Cl- 
A) Na+ will diffuse into solution 2 until the two solutions become isotonic. 
B) Solution 2 has a higher osmolarity. 
C) A membrane potential will develop, with the negative side being in solution 1. 
D) Solution 2 will gain water from solution 1. 
E) Eventually, solution 2 will contain only Na+ and solution 1 will contain only Cl-

Question 17

Which of the following is not associated with an extracellular chemical binding with a membrane-bound receptor?

Accepted Answer

A) Decreased activity within a certain cell 
B) Activation of an ATPase 
C) A change in shape of a transmembrane protein 
D) Increased activity within a certain cell 
E) Opening of a sodium channel that allows Na+ to diffuse out of the cell 
A) Decreased activity within a certain cell 
B) Activation of an ATPase 
C) A change in shape of a transmembrane protein 
D) Increased activity within a certain cell 
E) Opening of a sodium channel that allows Na+ to diffuse out of the cell

Question 18

Which pairing shows the least-related items?

Accepted Answer

A) Na+-K+ pump, transmembrane protein 
B) Facilitated diffusion carrier, integral protein 
C) Aquaporin, peripheral protein 
D) Calcium pump, integral protein 
E) Na+-K+ pump, integral protein 
A) Na+-K+ pump, transmembrane protein 
B) Facilitated diffusion carrier, integral protein 
C) Aquaporin, peripheral protein 
D) Calcium pump, integral protein 
E) Na+-K+ pump, integral protein

Question 19

Which statement about membrane proteins is incorrect?

Accepted Answer

A) Channels are water-filled pathways. 
B) Channels are not highly selective. 
C) Carriers are highly selective. 
D) CAMs serve as binding sites for specific ions. 
E) Proteins may work in conjunction with carbohydrates to provide recognition of "self." 
A) Channels are water-filled pathways. 
B) Channels are not highly selective. 
C) Carriers are highly selective. 
D) CAMs serve as binding sites for specific ions. 
E) Proteins may work in conjunction with carbohydrates to provide recognition of "self."

Question 20

Fibronectin is a protein that helps hold cells in position within tissues.

Accepted Answer

A) True 
 B)False

Anionic intracellular proteins (A⁻) cannot pass through membrane carriers because A⁻ proteins

If a typical body cell is placed into a 1% saline solution, the cell

Indicate whether the force in question tends to move the involved ion into or out of the cell by filling in the blank using the following code. a.tends to move the ion into the cell b.tends to move out of the cell -Electrical gradient for K⁺ at EK⁺

Net diffusion of water down its own concentration gradient toward an area of higher solute concentration is known as ____________________.

Identify the true statement(s) about the plasma membrane.

What is primarily responsible for the development of a resting membrane potential?

are adhering junctions, are impermeable junctions, and are communicating junctions.

Dephosphorylation of the Na⁺-K⁺ pump causes three Na⁺ ions to move out of a cell against a concentration gradient.

Cell adhesion proteins (CAMs) include and .

Use the figure above to answer the corresponding questions. -Describe the transport of glucose out of an intestinal cell and into the blood.

In many cells, the hormone called ____________________ promotes the insertion of glucose carriers into the plasma membranes.

Of the lipids in the plasma membrane, are most abundant, with lesser amounts of .

Solution 1 has a higher concentration of NaCl than solution 2.A membrane permeable only to Na⁺ and water separates the two membranes.Which of the following is true?

Which of the following is not associated with an extracellular chemical binding with a membrane-bound receptor?

Which pairing shows the least-related items?

Which statement about membrane proteins is incorrect?

Fibronectin is a protein that helps hold cells in position within tissues.

Introduction to Physiology and Homeostasis

Cell Physiology

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

Principles of Endocrinology: the Central Endocrine Glands

The Peripheral Endocrine Glands

The Reproductive System

Filters

Exam 3: The Plasma Membrane and Membrane Potential

Anionic intracellular proteins (A⁻) cannot pass through membrane carriers because A⁻ proteins

If a typical body cell is placed into a 1% saline solution, the cell

Indicate whether the force in question tends to move the involved ion into or out of the cell by filling in the blank using the following code. a.tends to move the ion into the cell b.tends to move out of the cell -Electrical gradient for K⁺ at EK⁺

Net diffusion of water down its own concentration gradient toward an area of higher solute concentration is known as ____________________.

Identify the true statement(s) about the plasma membrane.

What is primarily responsible for the development of a resting membrane potential?

____ are adhering junctions, ____ are impermeable junctions, and ____ are communicating junctions.

Dephosphorylation of the Na⁺-K⁺ pump causes three Na⁺ ions to move out of a cell against a concentration gradient.

Cell adhesion proteins (CAMs) include ____________________ and ____________________.

Use the figure above to answer the corresponding questions. -Describe the transport of glucose out of an intestinal cell and into the blood.

In many cells, the hormone called ____________________ promotes the insertion of glucose carriers into the plasma membranes.

Of the lipids in the plasma membrane, ____________________ are most abundant, with lesser amounts of ____________________.

Solution 1 has a higher concentration of NaCl than solution 2.A membrane permeable only to Na⁺ and water separates the two membranes.Which of the following is true?

Which of the following is not associated with an extracellular chemical binding with a membrane-bound receptor?

Which pairing shows the least-related items?

Which statement about membrane proteins is incorrect?

Fibronectin is a protein that helps hold cells in position within tissues.

Introduction to Physiology and Homeostasis

Cell Physiology

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

Principles of Endocrinology: the Central Endocrine Glands

The Peripheral Endocrine Glands

The Reproductive System

Filters

are adhering junctions, are impermeable junctions, and are communicating junctions.

Cell adhesion proteins (CAMs) include and .

Of the lipids in the plasma membrane, are most abundant, with lesser amounts of .