Biology Homeostasis PMDC Conceptual Practice
PMDC Verified Question 6 of 99
In the human nephron, filtered glucose is completely reabsorbed back into the peritubular capillaries at which site and via which mechanism?
A
Glomerulus by ultrafiltration
B
Collecting duct by active secretion
C
Proximal convoluted tubule by active reabsorption
D
Distal convoluted tubule by passive diffusion
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Proximal convoluted tubule by active reabsorption
Concept: Tubular reabsorption mechanisms in the nephron.

Solution: Under normal conditions, 100% of filtered glucose is reabsorbed in the proximal convoluted tubule (PCT) via secondary active transport utilizing sodium-glucose cotransporters (SGLT).

Why other options are incorrect:
  • Option A: Ultrafiltration occurs in the glomerulus to form filtrate; it does not reabsorb substances back into blood.

  • Option B: Collecting ducts adjust water and urea balance, not glucose reabsorption.

  • Option D: Glucose is not reabsorbed in the distal tubule via passive diffusion.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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