In the normally functioning cell, Na+ is moved out of the cell against a concentration gradient. Which of the following statements is correct about this process?

Question

In the normally functioning cell, Na+ is moved out of the cell against a concentration gradient.  Which of the following statements is correct about this process?

BlackTom AI · Accepted Answer

Analyzing the described scenario where Na+ is moved out of the cell against its concentration gradient prompts us to assess the energy requirement and transport mechanism.

Option 1: It creates a shortage of water and causes hyponatremia. This statement confuses cellular ion transport with clinical electrolyte disorders; while hyponatremia involves low extracellular sodium, the described pump activity is about moving Na+ against its gradient using energy, not about water shortage effects. Therefore this option mischaracterizes the process.

Option 2: It does not require energy and is called diffusion. Diffusion is the passive movement down a gradient that requires no energy input, and Na+ moving against its gradient cannot be diffusion. This option incorrectly labels the process as passive diffusion, making it incorrect.

Option 3: It requires energy and is called active transport. This description matches the fundamental concept: moving ions like Na+ against their concentration gradient uses energy, typically from ATP hydrolysis via pumps such as the sodium-potassium pump, which is a classic example of active transport. The phrase correctly identifies both the energy requirement and the transport category.

Option 4: It requires energy and is called filtration. Filtration involves movement of water and solutes through a membrane due to pressure differences, not an energy-driven, selective transport against a concentration gradient for ions like Na+. Labeling this as filtration mischaracterizes the mechanism at play.

In summary, option 3 accurately describes the process as energy-requiring active transport, while the other options either misstate the energy requirement or mislabel the transport mechanism.

In the normally functioning cell, Na+ is moved out of the cell against a concentration gradient. Which of the following statements is correct about this process?

View Explanation

Log in for full answers

Similar Questions

Question at position 85 The sodium-potassium pump is an example of:active transportpinocytosisosmosisphagocytosisfacilitated diffusion

The Na+/K+ pump is an excellent example of Primary Active Transport.

Properties associated with protein membrane active transporters is/are -

Question at position 44 Why does the kidney require significant energy for carrier-mediated transport?ATP is needed to filter blood at the glomerulus.It has to digest proteins before reabsorption.Many substances are actively transported against gradients.Transport processes rely on osmosis.

Proton pumps are involved in _

Cells with high energy demands are likely to undertake which form of glucose transport?

The image above shows membrane-bound ion pumps that maintain an electrochemical gradient across the membrane (region C). Based on this image, it is likely that

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler

In the normally functioning cell, Na+ is moved out of the cell against a concentration gradient. Which of the following statements is correct about this process?

View Explanation

Log in for full answers

Similar Questions

Question at position 85 The sodium-potassium pump is an example of:active transportpinocytosisosmosisphagocytosisfacilitated diffusion

The Na+/K+ pump is an excellent example of Primary Active Transport.

Properties associated with protein membrane active transporters is/are -

Question at position 44 Why does the kidney require significant energy for carrier-mediated transport?ATP is needed to filter blood at the glomerulus.It has to digest proteins before reabsorption.Many substances are actively transported against gradients.Transport processes rely on osmosis.

Proton pumps are __________ involved in ___________

Cells with high energy demands are likely to undertake which form of glucose transport?

The image above shows membrane-bound ion pumps that maintain an electrochemical gradient across the membrane (region C). Based on this image, it is likely that

More Practical Tools for Students Powered by AI Study Helper

Making Your Study Simpler

Proton pumps are involved in _