According to the fluid-mosaic model of the plasma membrane, a. protein and phospholipids form a regular, repeating structure. b. the membrane is a rigid structure. c. phospholipids form a double layer, with the polar parts facing each other. d. proteins are free to move within a double layer of phospholipids.

Question

Want to see more full solutions like this?

Answer 1

Textbook Question

Chapter 3, Problem 1RA

According to the fluid-mosaic model of the plasma membrane,

a. protein and phospholipids form a regular, repeating structure.

b. the membrane is a rigid structure.

c. phospholipids form a double layer, with the polar parts facing each other.

d. proteins are free to move within a double layer of phospholipids.

Expert Solution & Answer

Summary Introduction

To determine:

Characteristic features of the fluid mosaic model of the plasma membrane.

Introduction:

The fluid mosaic model is composed of lipid bilayer. The lipid bilayer provides elasticity and fluidity to the membrane. It contains the phospholipid, cholesterol, protein, and carbohydrates. The plasma membrane is amphipathic in nature, in which the hydrophobic tails face each other whereas the hydrophilic region faces the cytosol. There are two kinds of proteins present in the membrane- integral and peripheral membrane proteins.

Answer to Problem 1RA

Correct answer:

The fluid mosaic model of the plasma membrane is that the proteins are free to move within a double layer of phospholipids. Therefore, option (d) is correct.

Explanation of Solution

Explanation for the correct answer:

Option (d) is given that proteins are free to move within a double layer of phospholipid. The fluid mosaic model of the plasma membrane describes the membrane as a combination of phospholipid, cholesterol, and protein which give the membrane the fluid nature. The plasma membrane is not a rigid entity hence allows free movement of integral proteins within the lipid bilayer. Hence, option (d) is correct.

Explanation for the incorrect answer:

Option (a) protein and phospholipid form a regular, repeating structure. The two leaflets of the membrane are asymmetric in nature. Both the leaflets are composed of different proteins and lipids, which give a distinct identity to the membrane. Therefore, option (a) is incorrect.

Option (b) the membrane is a rigid structure. The membrane is not a rigid structure. It is a lipid bilayer which is composed of various phospholipids, cholesterol, and proteins. They are composed of amphiphilic molecules. They have a hydrophilic phosphate and a hydrophobic tail. Therefore, option (b) is incorrect.

Option (c) phospholipid forms a double layer, with the polar parts facing each other. The phospholipid forms a two-layered cell membrane, where the hydrophobic tails face each other and the hydrophilic heads or the polar parts face out. Therefore, option (c) is incorrect.

Hence, options (b), (a), and (c) are incorrect.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

Three of the many recessive mutations in Drosophila melanogaster that affect body color, wing shape, or bristle morphology are black (b) body versus grey in wild type, dumpy (dp), obliquely truncated wings versus long wings in the male, and hooked (hk) bristles versus not hooked in the wild type. From a cross of a dumpy female with a black and hooked male, all of the F1 were wild type for all three of the characters. The testcross of an F1 female with a dumpy, black, hooked male gave the following results: Trait Number of individuals Wild type 169 Black 19 Black, hooked 301 Dumpy, hooked 21 Hooked, dumpy, black 172 Dumpy, black 6 Dumpy 305 Hooked 8 Determine the order of the genes and the mapping distance between genes. Determine the coefficient of confidence for the portion of the chromosome involved in the cross. How much interference takes place in the cross?

What happens to a microbes membrane at colder temperature?

Genes at loci f, m, and w are linked, but their order is unknown. The F1 heterozygotes from a cross of FFMMWW x ffmmww are test crossed. The most frequent phenotypes in the test cross progeny will be FMW and fmw regardless of what the gene order turns out to be. What classes of testcross progeny (phenotypes) would be least frequent if locus m is in the middle? What classes would be least frequent if locus f is in the middle? What classes would be least frequent if locus w is in the middle?

Answer 2

Textbook Question

Chapter 3, Problem 1RA

According to the fluid-mosaic model of the plasma membrane,

a. protein and phospholipids form a regular, repeating structure.

b. the membrane is a rigid structure.

c. phospholipids form a double layer, with the polar parts facing each other.

d. proteins are free to move within a double layer of phospholipids.

Expert Solution & Answer

Summary Introduction

To determine:

Characteristic features of the fluid mosaic model of the plasma membrane.

Introduction:

The fluid mosaic model is composed of lipid bilayer. The lipid bilayer provides elasticity and fluidity to the membrane. It contains the phospholipid, cholesterol, protein, and carbohydrates. The plasma membrane is amphipathic in nature, in which the hydrophobic tails face each other whereas the hydrophilic region faces the cytosol. There are two kinds of proteins present in the membrane- integral and peripheral membrane proteins.

Answer to Problem 1RA

Correct answer:

The fluid mosaic model of the plasma membrane is that the proteins are free to move within a double layer of phospholipids. Therefore, option (d) is correct.

Explanation of Solution

Explanation for the correct answer:

Option (d) is given that proteins are free to move within a double layer of phospholipid. The fluid mosaic model of the plasma membrane describes the membrane as a combination of phospholipid, cholesterol, and protein which give the membrane the fluid nature. The plasma membrane is not a rigid entity hence allows free movement of integral proteins within the lipid bilayer. Hence, option (d) is correct.

Explanation for the incorrect answer:

Option (a) protein and phospholipid form a regular, repeating structure. The two leaflets of the membrane are asymmetric in nature. Both the leaflets are composed of different proteins and lipids, which give a distinct identity to the membrane. Therefore, option (a) is incorrect.

Option (b) the membrane is a rigid structure. The membrane is not a rigid structure. It is a lipid bilayer which is composed of various phospholipids, cholesterol, and proteins. They are composed of amphiphilic molecules. They have a hydrophilic phosphate and a hydrophobic tail. Therefore, option (b) is incorrect.

Option (c) phospholipid forms a double layer, with the polar parts facing each other. The phospholipid forms a two-layered cell membrane, where the hydrophobic tails face each other and the hydrophilic heads or the polar parts face out. Therefore, option (c) is incorrect.

Hence, options (b), (a), and (c) are incorrect.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 3, Problem 1RA

According to the fluid-mosaic model of the plasma membrane,

a. protein and phospholipids form a regular, repeating structure.

b. the membrane is a rigid structure.

c. phospholipids form a double layer, with the polar parts facing each other.

d. proteins are free to move within a double layer of phospholipids.

Expert Solution & Answer

Summary Introduction

To determine:

Characteristic features of the fluid mosaic model of the plasma membrane.

Introduction:

The fluid mosaic model is composed of lipid bilayer. The lipid bilayer provides elasticity and fluidity to the membrane. It contains the phospholipid, cholesterol, protein, and carbohydrates. The plasma membrane is amphipathic in nature, in which the hydrophobic tails face each other whereas the hydrophilic region faces the cytosol. There are two kinds of proteins present in the membrane- integral and peripheral membrane proteins.

Answer to Problem 1RA

Correct answer:

The fluid mosaic model of the plasma membrane is that the proteins are free to move within a double layer of phospholipids. Therefore, option (d) is correct.

Explanation of Solution

Explanation for the correct answer:

Option (d) is given that proteins are free to move within a double layer of phospholipid. The fluid mosaic model of the plasma membrane describes the membrane as a combination of phospholipid, cholesterol, and protein which give the membrane the fluid nature. The plasma membrane is not a rigid entity hence allows free movement of integral proteins within the lipid bilayer. Hence, option (d) is correct.

Explanation for the incorrect answer:

Option (a) protein and phospholipid form a regular, repeating structure. The two leaflets of the membrane are asymmetric in nature. Both the leaflets are composed of different proteins and lipids, which give a distinct identity to the membrane. Therefore, option (a) is incorrect.

Option (b) the membrane is a rigid structure. The membrane is not a rigid structure. It is a lipid bilayer which is composed of various phospholipids, cholesterol, and proteins. They are composed of amphiphilic molecules. They have a hydrophilic phosphate and a hydrophobic tail. Therefore, option (b) is incorrect.

Option (c) phospholipid forms a double layer, with the polar parts facing each other. The phospholipid forms a two-layered cell membrane, where the hydrophobic tails face each other and the hydrophilic heads or the polar parts face out. Therefore, option (c) is incorrect.

Hence, options (b), (a), and (c) are incorrect.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 3, Problem 1RA

According to the fluid-mosaic model of the plasma membrane,

a. protein and phospholipids form a regular, repeating structure.

b. the membrane is a rigid structure.

c. phospholipids form a double layer, with the polar parts facing each other.

d. proteins are free to move within a double layer of phospholipids.

Expert Solution & Answer

Summary Introduction

To determine:

Characteristic features of the fluid mosaic model of the plasma membrane.

Introduction:

The fluid mosaic model is composed of lipid bilayer. The lipid bilayer provides elasticity and fluidity to the membrane. It contains the phospholipid, cholesterol, protein, and carbohydrates. The plasma membrane is amphipathic in nature, in which the hydrophobic tails face each other whereas the hydrophilic region faces the cytosol. There are two kinds of proteins present in the membrane- integral and peripheral membrane proteins.

Answer to Problem 1RA

Correct answer:

The fluid mosaic model of the plasma membrane is that the proteins are free to move within a double layer of phospholipids. Therefore, option (d) is correct.

Explanation of Solution

Explanation for the correct answer:

Option (d) is given that proteins are free to move within a double layer of phospholipid. The fluid mosaic model of the plasma membrane describes the membrane as a combination of phospholipid, cholesterol, and protein which give the membrane the fluid nature. The plasma membrane is not a rigid entity hence allows free movement of integral proteins within the lipid bilayer. Hence, option (d) is correct.

Explanation for the incorrect answer:

Option (a) protein and phospholipid form a regular, repeating structure. The two leaflets of the membrane are asymmetric in nature. Both the leaflets are composed of different proteins and lipids, which give a distinct identity to the membrane. Therefore, option (a) is incorrect.

Option (b) the membrane is a rigid structure. The membrane is not a rigid structure. It is a lipid bilayer which is composed of various phospholipids, cholesterol, and proteins. They are composed of amphiphilic molecules. They have a hydrophilic phosphate and a hydrophobic tail. Therefore, option (b) is incorrect.

Option (c) phospholipid forms a double layer, with the polar parts facing each other. The phospholipid forms a two-layered cell membrane, where the hydrophobic tails face each other and the hydrophilic heads or the polar parts face out. Therefore, option (c) is incorrect.

Hence, options (b), (a), and (c) are incorrect.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

To determine:

Characteristic features of the fluid mosaic model of the plasma membrane.

Introduction:

The fluid mosaic model is composed of lipid bilayer. The lipid bilayer provides elasticity and fluidity to the membrane. It contains the phospholipid, cholesterol, protein, and carbohydrates. The plasma membrane is amphipathic in nature, in which the hydrophobic tails face each other whereas the hydrophilic region faces the cytosol. There are two kinds of proteins present in the membrane- integral and peripheral membrane proteins.

Answer to Problem 1RA

Correct answer:

The fluid mosaic model of the plasma membrane is that the proteins are free to move within a double layer of phospholipids. Therefore, option (d) is correct.

Explanation of Solution

Explanation for the correct answer:

Option (d) is given that proteins are free to move within a double layer of phospholipid. The fluid mosaic model of the plasma membrane describes the membrane as a combination of phospholipid, cholesterol, and protein which give the membrane the fluid nature. The plasma membrane is not a rigid entity hence allows free movement of integral proteins within the lipid bilayer. Hence, option (d) is correct.

Explanation for the incorrect answer:

Option (a) protein and phospholipid form a regular, repeating structure. The two leaflets of the membrane are asymmetric in nature. Both the leaflets are composed of different proteins and lipids, which give a distinct identity to the membrane. Therefore, option (a) is incorrect.

Option (b) the membrane is a rigid structure. The membrane is not a rigid structure. It is a lipid bilayer which is composed of various phospholipids, cholesterol, and proteins. They are composed of amphiphilic molecules. They have a hydrophilic phosphate and a hydrophobic tail. Therefore, option (b) is incorrect.

Option (c) phospholipid forms a double layer, with the polar parts facing each other. The phospholipid forms a two-layered cell membrane, where the hydrophobic tails face each other and the hydrophilic heads or the polar parts face out. Therefore, option (c) is incorrect.

Hence, options (b), (a), and (c) are incorrect.

Answer 8

Expert Solution & Answer

Summary Introduction

To determine:

Characteristic features of the fluid mosaic model of the plasma membrane.

Introduction:

The fluid mosaic model is composed of lipid bilayer. The lipid bilayer provides elasticity and fluidity to the membrane. It contains the phospholipid, cholesterol, protein, and carbohydrates. The plasma membrane is amphipathic in nature, in which the hydrophobic tails face each other whereas the hydrophilic region faces the cytosol. There are two kinds of proteins present in the membrane- integral and peripheral membrane proteins.

Answer to Problem 1RA

Correct answer:

The fluid mosaic model of the plasma membrane is that the proteins are free to move within a double layer of phospholipids. Therefore, option (d) is correct.

Explanation of Solution

Explanation for the correct answer:

Option (d) is given that proteins are free to move within a double layer of phospholipid. The fluid mosaic model of the plasma membrane describes the membrane as a combination of phospholipid, cholesterol, and protein which give the membrane the fluid nature. The plasma membrane is not a rigid entity hence allows free movement of integral proteins within the lipid bilayer. Hence, option (d) is correct.

Explanation for the incorrect answer:

Option (a) protein and phospholipid form a regular, repeating structure. The two leaflets of the membrane are asymmetric in nature. Both the leaflets are composed of different proteins and lipids, which give a distinct identity to the membrane. Therefore, option (a) is incorrect.

Option (b) the membrane is a rigid structure. The membrane is not a rigid structure. It is a lipid bilayer which is composed of various phospholipids, cholesterol, and proteins. They are composed of amphiphilic molecules. They have a hydrophilic phosphate and a hydrophobic tail. Therefore, option (b) is incorrect.

Option (c) phospholipid forms a double layer, with the polar parts facing each other. The phospholipid forms a two-layered cell membrane, where the hydrophobic tails face each other and the hydrophilic heads or the polar parts face out. Therefore, option (c) is incorrect.

Hence, options (b), (a), and (c) are incorrect.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

To determine:

Characteristic features of the fluid mosaic model of the plasma membrane.

Introduction:

The fluid mosaic model is composed of lipid bilayer. The lipid bilayer provides elasticity and fluidity to the membrane. It contains the phospholipid, cholesterol, protein, and carbohydrates. The plasma membrane is amphipathic in nature, in which the hydrophobic tails face each other whereas the hydrophilic region faces the cytosol. There are two kinds of proteins present in the membrane- integral and peripheral membrane proteins.

Answer 12

Answer to Problem 1RA

Correct answer:

The fluid mosaic model of the plasma membrane is that the proteins are free to move within a double layer of phospholipids. Therefore, option (d) is correct.

Answer 13

Explanation of Solution

Explanation for the correct answer:

Option (d) is given that proteins are free to move within a double layer of phospholipid. The fluid mosaic model of the plasma membrane describes the membrane as a combination of phospholipid, cholesterol, and protein which give the membrane the fluid nature. The plasma membrane is not a rigid entity hence allows free movement of integral proteins within the lipid bilayer. Hence, option (d) is correct.

Explanation for the incorrect answer:

Option (a) protein and phospholipid form a regular, repeating structure. The two leaflets of the membrane are asymmetric in nature. Both the leaflets are composed of different proteins and lipids, which give a distinct identity to the membrane. Therefore, option (a) is incorrect.

Option (b) the membrane is a rigid structure. The membrane is not a rigid structure. It is a lipid bilayer which is composed of various phospholipids, cholesterol, and proteins. They are composed of amphiphilic molecules. They have a hydrophilic phosphate and a hydrophobic tail. Therefore, option (b) is incorrect.

Option (c) phospholipid forms a double layer, with the polar parts facing each other. The phospholipid forms a two-layered cell membrane, where the hydrophobic tails face each other and the hydrophilic heads or the polar parts face out. Therefore, option (c) is incorrect.

Hence, options (b), (a), and (c) are incorrect.

Answer 14

Ch. 3 - According to the fluid-mosaic model of the plasma...Ch. 3 - After the DNA molecule has replicated itself, the...Ch. 3 - Nerve and skeletal muscle cells in the adult,...Ch. 3 - Prob. 4RA Ch. 3 - The phase of mitosis in which the chromatids...Ch. 3 - Prob. 6RA Ch. 3 - Which of these statements about RNA is true?...Ch. 3 - Prob. 8RA Ch. 3 - Prob. 9RA Ch. 3 - Prob. 10RA

Concept explainers

Videos

Answer to Problem 1RA

Explanation of Solution

Want to see more full solutions like this?

Chapter 3 Solutions