Question:
Which part of the nephron is impermeable to water?
Which part of the nephron is impermeable to water?
Show Hint
Descending = "Down for Water" (Permeable); Ascending = "Against Water" (Impermeable).
Updated On: May 5, 2026
- Proximal convoluted tubule
- Loop of Henle (ascending limb)
- Collecting duct
- Bowman's capsule
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Concept
The nephron uses differential permeability in its various segments to concentrate urine and maintain osmotic balance.
Step 2: Meaning
Impermeability to water means that water molecules cannot pass through the cell membranes of that specific segment, regardless of the osmotic gradient.
Step 3: Analysis
The proximal tubule and descending limb of the loop of Henle are highly permeable to water. In contrast, the ascending limb is impermeable to water but allows the active or passive transport of electrolytes (like $Na^+$ and $Cl^-$).
Step 4: Conclusion
This segment ensures that solutes are removed without water following them, which is crucial for creating a concentrated medullary interstitium. Final Answer: (B)
The nephron uses differential permeability in its various segments to concentrate urine and maintain osmotic balance.
Step 2: Meaning
Impermeability to water means that water molecules cannot pass through the cell membranes of that specific segment, regardless of the osmotic gradient.
Step 3: Analysis
The proximal tubule and descending limb of the loop of Henle are highly permeable to water. In contrast, the ascending limb is impermeable to water but allows the active or passive transport of electrolytes (like $Na^+$ and $Cl^-$).
Step 4: Conclusion
This segment ensures that solutes are removed without water following them, which is crucial for creating a concentrated medullary interstitium. Final Answer: (B)
Was this answer helpful?
0
0
Top TS EAMCET Biology Questions
- Arrange the following steps in the order of their occurance in the lytic cycle of a phage i) Maturation phase ii) Penetration phase iii) Attacinnenr iv) Release phase v) Biosynthesis The correct sequence is
- In gel electrophoresis, DNA molecules can be separated by forcing them to move towards the anode under an electr ic field through a matrix. This is because DNA fragments are positively charged. Which of the following is true?
- Which of the following has ATP-ase activity in flagella
- Match the following lists: The correct answer is
- Study the following lists : The correct answer is
View More Questions
Top TS EAMCET types of cells Questions
- The process of plasmolysis occurs when:
- Powerhouse of the cell is known as:
- Synaptic vesicles in neurons contain:
- The kidney's functional unit is the:
- Which part of the brain controls body temperature?
View More Questions
Top TS EAMCET Questions
- A bag contains $5$ red balls, $3$ black balls and $4$ white balls are drawn at random. The probability that they are not of same colour is
- If $cosec\, \theta - \cot \theta = 2017$, then quadrant in which $\theta $ lies is
- If $a$ is a unit vector, then $| a \times \hat{ i }|^{2}+| a \times \hat{ j }|^{2}+| a \times \hat{ k }|^{2}=$
- $A$ straight line makes an intercept on the $Y$-axis twice as long as that on $X$-axis and is at a unit distance from the origin. Then the line is represented by the equations
- Let $S$ and $S'$ be the foci of an ellipse and B be one end of its minor axis. If $SBS'$ is an isosceles right angled triangle then the eccentricity of the ellipse is
View More Questions