Excretory System
Mediumbiology
Which nephron structure is primary site of glucose reabsorption?
Select the correct option:
Solution
Incorrect! Answer:
Proximal convoluted tubule
- Nephron Function: Filtration occurs in the glomerulus, followed by extensive reabsorption in the tubules.
- Proximal Convoluted Tubule (PCT): This is the most active site for reabsorption.
- Glucose Status: In a healthy person, 100% of the filtered glucose is reabsorbed back into the blood in the PCT.
- Mechanism: This happens via secondary active transport using sodium-glucose co-transporters (SGLTs).
- Loop of Henle: Primarily responsible for maintaining the osmotic gradient for water and salt balance.
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About This Question
- Subject
- biology
- Chapter
- human physiology
- Topic
- excretory system
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Proximal convoluted tubule
- Nephron Function: Filtration occurs in the glomerulus, followed by extensive reabsorption in the tubules.
- Proximal Convoluted Tubule (PCT): This is the most active site for reabsorption.
- Glucose Status: In a healthy person, 100% of the filtered glucose is reabsorbed back into the blood in the PCT.
- Mechanism: This happens via secondary active transport using sodium-glucose co-transporters (SGLTs).
- Loop of Henle: Primarily responsible for maintaining the osmotic gradient for water and salt balance.
This medium difficulty biology question is from the chapter human physiology, covering the topic of excretory system. It appeared in the 2025 exam.
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