Aquaporins or water channels are the proteins that help in the movement of water across the membrane. They are integral membrane proteins that form pores in the membrane to allow the transfer of water and sometimes small solutes.

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Answer 1

Question

Chapter 39, Problem 1TY

Summary Introduction

Introduction: Aquaporins or water channels are the proteins that help in the movement of water across the membrane. They are integral membrane proteins that form pores in the membrane to allow the transfer of water and sometimes small solutes.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: Aquaporins are the protein channels that allow the transfer of water across the plasma membrane. Hence, the correct answer is option c.

Explanation of Solution

Reason for correct answer:

Aquaporins are a part of major intrinsic proteins that result in the pore formation. This allow the exchange of water molecules, and in some cases, small solute particles across the plasma membrane.

Option c. is given as “a protein channel in plasma membranes that facilitates the diffusion of water”.

The intrinsic proteins that cause the exchange of water molecules across the membrane are called aquaporins. Hence, the correct answer is option c.

Reasons for the incorrect answer:

Option a. is given as, “a channel protein that allows the influx of K⁺ into cells, causing water to flow in between the phospholipids of the plasma membrane”.

The aquaporins only allow the transfer of water molecules from extracellular fluid to the cytoplasm and not ions. Hence, option a. is incorrect.

Option b. is given as, “a type of blue-colored pore in the epidermal surfaces of plants”.

The aquaporins are not blue colored and are present in the plasma membrane of the cells for the transport of water. Hence, option b. is incorrect.

Option d. is given as, “a transport protein, or transporter, in plasma membranes that use protons to co-transport water”.

Aquaporins are the primary channels for the transport of water, some small neutral solutes and carbon dioxide through the plant cell membrane. They transfer the water molecules based on the concentration gradient. Hence, option d. is incorrect.

Option e. is given as, “none of the above”.

The aquaporins serve as protein channels that are hydrophobic and allow the transfer of water molecules. Hence, option e. is incorrect.

Hence, the options a., b., d., and e. are incorrect.

Conclusion

Aquaporins are present on the plasma membrane of the plant, animal, and bacterial cells. These protein channels serve as the key transport route for the water molecules. They are hydrophobic and can also transfer some neutral solutes and carbon dioxide across the plasma membrane.

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Students have asked these similar questions

If a cell is in an isotonic environment, then a. the cell will gain water and burst. b. no water will move across the membrane. c. the cell will lose water and shrink. d. osmosis still occurs, but there is no net gain or loss of cell volume.

Choose pne of these choices: A. Water molecules will still be able to move across the cell membrand but at a slkwer rate. B. Water moleces will no longer be able to move across the cell membrane. C. Water molecules will move across the cell membrand at a faster rate without the aquaporin regulating their flow. D. Water molecules will only be able to enter the cell by active transport.

One substance flows down its concentration gradient, and the energy is harnessed to move another substance up its gradient in the same direction. This best describes a. primary active transport. b. endocytosis. c. symport secondary active transport. d. antiport secondary active transport.

Answer 2

Question

Chapter 39, Problem 1TY

Summary Introduction

Introduction: Aquaporins or water channels are the proteins that help in the movement of water across the membrane. They are integral membrane proteins that form pores in the membrane to allow the transfer of water and sometimes small solutes.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: Aquaporins are the protein channels that allow the transfer of water across the plasma membrane. Hence, the correct answer is option c.

Explanation of Solution

Reason for correct answer:

Aquaporins are a part of major intrinsic proteins that result in the pore formation. This allow the exchange of water molecules, and in some cases, small solute particles across the plasma membrane.

Option c. is given as “a protein channel in plasma membranes that facilitates the diffusion of water”.

The intrinsic proteins that cause the exchange of water molecules across the membrane are called aquaporins. Hence, the correct answer is option c.

Reasons for the incorrect answer:

Option a. is given as, “a channel protein that allows the influx of K⁺ into cells, causing water to flow in between the phospholipids of the plasma membrane”.

The aquaporins only allow the transfer of water molecules from extracellular fluid to the cytoplasm and not ions. Hence, option a. is incorrect.

Option b. is given as, “a type of blue-colored pore in the epidermal surfaces of plants”.

The aquaporins are not blue colored and are present in the plasma membrane of the cells for the transport of water. Hence, option b. is incorrect.

Option d. is given as, “a transport protein, or transporter, in plasma membranes that use protons to co-transport water”.

Aquaporins are the primary channels for the transport of water, some small neutral solutes and carbon dioxide through the plant cell membrane. They transfer the water molecules based on the concentration gradient. Hence, option d. is incorrect.

Option e. is given as, “none of the above”.

The aquaporins serve as protein channels that are hydrophobic and allow the transfer of water molecules. Hence, option e. is incorrect.

Hence, the options a., b., d., and e. are incorrect.

Conclusion

Aquaporins are present on the plasma membrane of the plant, animal, and bacterial cells. These protein channels serve as the key transport route for the water molecules. They are hydrophobic and can also transfer some neutral solutes and carbon dioxide across the plasma membrane.

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

Answer 3

Question

Chapter 39, Problem 1TY

Summary Introduction

Introduction: Aquaporins or water channels are the proteins that help in the movement of water across the membrane. They are integral membrane proteins that form pores in the membrane to allow the transfer of water and sometimes small solutes.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: Aquaporins are the protein channels that allow the transfer of water across the plasma membrane. Hence, the correct answer is option c.

Explanation of Solution

Reason for correct answer:

Aquaporins are a part of major intrinsic proteins that result in the pore formation. This allow the exchange of water molecules, and in some cases, small solute particles across the plasma membrane.

Option c. is given as “a protein channel in plasma membranes that facilitates the diffusion of water”.

The intrinsic proteins that cause the exchange of water molecules across the membrane are called aquaporins. Hence, the correct answer is option c.

Reasons for the incorrect answer:

Option a. is given as, “a channel protein that allows the influx of K⁺ into cells, causing water to flow in between the phospholipids of the plasma membrane”.

The aquaporins only allow the transfer of water molecules from extracellular fluid to the cytoplasm and not ions. Hence, option a. is incorrect.

Option b. is given as, “a type of blue-colored pore in the epidermal surfaces of plants”.

The aquaporins are not blue colored and are present in the plasma membrane of the cells for the transport of water. Hence, option b. is incorrect.

Option d. is given as, “a transport protein, or transporter, in plasma membranes that use protons to co-transport water”.

Aquaporins are the primary channels for the transport of water, some small neutral solutes and carbon dioxide through the plant cell membrane. They transfer the water molecules based on the concentration gradient. Hence, option d. is incorrect.

Option e. is given as, “none of the above”.

The aquaporins serve as protein channels that are hydrophobic and allow the transfer of water molecules. Hence, option e. is incorrect.

Hence, the options a., b., d., and e. are incorrect.

Conclusion

Aquaporins are present on the plasma membrane of the plant, animal, and bacterial cells. These protein channels serve as the key transport route for the water molecules. They are hydrophobic and can also transfer some neutral solutes and carbon dioxide across the plasma membrane.

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

Answer 4

Question

Chapter 39, Problem 1TY

Summary Introduction

Introduction: Aquaporins or water channels are the proteins that help in the movement of water across the membrane. They are integral membrane proteins that form pores in the membrane to allow the transfer of water and sometimes small solutes.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: Aquaporins are the protein channels that allow the transfer of water across the plasma membrane. Hence, the correct answer is option c.

Explanation of Solution

Reason for correct answer:

Aquaporins are a part of major intrinsic proteins that result in the pore formation. This allow the exchange of water molecules, and in some cases, small solute particles across the plasma membrane.

Option c. is given as “a protein channel in plasma membranes that facilitates the diffusion of water”.

The intrinsic proteins that cause the exchange of water molecules across the membrane are called aquaporins. Hence, the correct answer is option c.

Reasons for the incorrect answer:

Option a. is given as, “a channel protein that allows the influx of K⁺ into cells, causing water to flow in between the phospholipids of the plasma membrane”.

The aquaporins only allow the transfer of water molecules from extracellular fluid to the cytoplasm and not ions. Hence, option a. is incorrect.

Option b. is given as, “a type of blue-colored pore in the epidermal surfaces of plants”.

The aquaporins are not blue colored and are present in the plasma membrane of the cells for the transport of water. Hence, option b. is incorrect.

Option d. is given as, “a transport protein, or transporter, in plasma membranes that use protons to co-transport water”.

Aquaporins are the primary channels for the transport of water, some small neutral solutes and carbon dioxide through the plant cell membrane. They transfer the water molecules based on the concentration gradient. Hence, option d. is incorrect.

Option e. is given as, “none of the above”.

The aquaporins serve as protein channels that are hydrophobic and allow the transfer of water molecules. Hence, option e. is incorrect.

Hence, the options a., b., d., and e. are incorrect.

Conclusion

Aquaporins are present on the plasma membrane of the plant, animal, and bacterial cells. These protein channels serve as the key transport route for the water molecules. They are hydrophobic and can also transfer some neutral solutes and carbon dioxide across the plasma membrane.

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

Answer 5

Chapter 39, Problem 1TY

Summary Introduction

Introduction: Aquaporins or water channels are the proteins that help in the movement of water across the membrane. They are integral membrane proteins that form pores in the membrane to allow the transfer of water and sometimes small solutes.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: Aquaporins are the protein channels that allow the transfer of water across the plasma membrane. Hence, the correct answer is option c.

Explanation of Solution

Reason for correct answer:

Aquaporins are a part of major intrinsic proteins that result in the pore formation. This allow the exchange of water molecules, and in some cases, small solute particles across the plasma membrane.

Option c. is given as “a protein channel in plasma membranes that facilitates the diffusion of water”.

The intrinsic proteins that cause the exchange of water molecules across the membrane are called aquaporins. Hence, the correct answer is option c.

Reasons for the incorrect answer:

Option a. is given as, “a channel protein that allows the influx of K⁺ into cells, causing water to flow in between the phospholipids of the plasma membrane”.

The aquaporins only allow the transfer of water molecules from extracellular fluid to the cytoplasm and not ions. Hence, option a. is incorrect.

Option b. is given as, “a type of blue-colored pore in the epidermal surfaces of plants”.

The aquaporins are not blue colored and are present in the plasma membrane of the cells for the transport of water. Hence, option b. is incorrect.

Option d. is given as, “a transport protein, or transporter, in plasma membranes that use protons to co-transport water”.

Aquaporins are the primary channels for the transport of water, some small neutral solutes and carbon dioxide through the plant cell membrane. They transfer the water molecules based on the concentration gradient. Hence, option d. is incorrect.

Option e. is given as, “none of the above”.

The aquaporins serve as protein channels that are hydrophobic and allow the transfer of water molecules. Hence, option e. is incorrect.

Hence, the options a., b., d., and e. are incorrect.

Conclusion

Aquaporins are present on the plasma membrane of the plant, animal, and bacterial cells. These protein channels serve as the key transport route for the water molecules. They are hydrophobic and can also transfer some neutral solutes and carbon dioxide across the plasma membrane.

Answer 6

Chapter 39, Problem 1TY

Summary Introduction

Introduction: Aquaporins or water channels are the proteins that help in the movement of water across the membrane. They are integral membrane proteins that form pores in the membrane to allow the transfer of water and sometimes small solutes.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: Aquaporins are the protein channels that allow the transfer of water across the plasma membrane. Hence, the correct answer is option c.

Explanation of Solution

Reason for correct answer:

Aquaporins are a part of major intrinsic proteins that result in the pore formation. This allow the exchange of water molecules, and in some cases, small solute particles across the plasma membrane.

Option c. is given as “a protein channel in plasma membranes that facilitates the diffusion of water”.

The intrinsic proteins that cause the exchange of water molecules across the membrane are called aquaporins. Hence, the correct answer is option c.

Reasons for the incorrect answer:

Option a. is given as, “a channel protein that allows the influx of K⁺ into cells, causing water to flow in between the phospholipids of the plasma membrane”.

The aquaporins only allow the transfer of water molecules from extracellular fluid to the cytoplasm and not ions. Hence, option a. is incorrect.

Option b. is given as, “a type of blue-colored pore in the epidermal surfaces of plants”.

The aquaporins are not blue colored and are present in the plasma membrane of the cells for the transport of water. Hence, option b. is incorrect.

Option d. is given as, “a transport protein, or transporter, in plasma membranes that use protons to co-transport water”.

Aquaporins are the primary channels for the transport of water, some small neutral solutes and carbon dioxide through the plant cell membrane. They transfer the water molecules based on the concentration gradient. Hence, option d. is incorrect.

Option e. is given as, “none of the above”.

The aquaporins serve as protein channels that are hydrophobic and allow the transfer of water molecules. Hence, option e. is incorrect.

Hence, the options a., b., d., and e. are incorrect.

Conclusion

Aquaporins are present on the plasma membrane of the plant, animal, and bacterial cells. These protein channels serve as the key transport route for the water molecules. They are hydrophobic and can also transfer some neutral solutes and carbon dioxide across the plasma membrane.

Answer 7

Chapter 39, Problem 1TY

Summary Introduction

Introduction: Aquaporins or water channels are the proteins that help in the movement of water across the membrane. They are integral membrane proteins that form pores in the membrane to allow the transfer of water and sometimes small solutes.

Answer 8

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: Aquaporins are the protein channels that allow the transfer of water across the plasma membrane. Hence, the correct answer is option c.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Reason for correct answer:

Aquaporins are a part of major intrinsic proteins that result in the pore formation. This allow the exchange of water molecules, and in some cases, small solute particles across the plasma membrane.

Option c. is given as “a protein channel in plasma membranes that facilitates the diffusion of water”.

The intrinsic proteins that cause the exchange of water molecules across the membrane are called aquaporins. Hence, the correct answer is option c.

Reasons for the incorrect answer:

Option a. is given as, “a channel protein that allows the influx of K⁺ into cells, causing water to flow in between the phospholipids of the plasma membrane”.

The aquaporins only allow the transfer of water molecules from extracellular fluid to the cytoplasm and not ions. Hence, option a. is incorrect.

Option b. is given as, “a type of blue-colored pore in the epidermal surfaces of plants”.

The aquaporins are not blue colored and are present in the plasma membrane of the cells for the transport of water. Hence, option b. is incorrect.

Option d. is given as, “a transport protein, or transporter, in plasma membranes that use protons to co-transport water”.

Aquaporins are the primary channels for the transport of water, some small neutral solutes and carbon dioxide through the plant cell membrane. They transfer the water molecules based on the concentration gradient. Hence, option d. is incorrect.

Option e. is given as, “none of the above”.

The aquaporins serve as protein channels that are hydrophobic and allow the transfer of water molecules. Hence, option e. is incorrect.

Hence, the options a., b., d., and e. are incorrect.

Answer 12

Conclusion

Aquaporins are present on the plasma membrane of the plant, animal, and bacterial cells. These protein channels serve as the key transport route for the water molecules. They are hydrophobic and can also transfer some neutral solutes and carbon dioxide across the plasma membrane.

Answer 13

Ch. 39.2 - Describe the direction of water movement when a...Ch. 39.3 - Prob. 1CS Ch. 39.4 - Prob. 1CS Ch. 39.4 - Prob. 1CC Ch. 39.4 - Prob. 2CC Ch. 39.4 - Prob. 3CC Ch. 39.4 - Prob. 4CC Ch. 39.4 - Prob. 5CC Ch. 39.4 - Prob. 1EQ Ch. 39.4 - Prob. 2EQ

Aquaporins or water channels are the proteins that help in the movement of water across the membrane. They are integral membrane proteins that form pores in the membrane to allow the transfer of water and sometimes small solutes.

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Introduction: Aquaporins or water channels are the proteins that help in the movement of water across the membrane. They are integral membrane proteins that form pores in the membrane to allow the transfer of water and sometimes small solutes.

Answer to Problem 1TY

Explanation of Solution

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Chapter 39 Solutions