Biology Homeostasis PMDC Conceptual Practice
PMDC Verified Question 28 of 99
The active transport process by which specific waste solutes are transferred directly from peritubular capillaries into the renal tubular lumen is called:
A
Tubular secretion
B
Glomerular filtration
C
Tubular reabsorption
D
Ultrafiltration
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Tubular secretion
Concept: Renal tubular secretion mechanisms.

Solution: Tubular secretion involves active transport of substances (e.g., \(\text{H}^+\), \(\text{K}^+\), penicillin) from peritubular blood directly into the tubular filtrate.

Why other options are incorrect:
  • Option B & Option D: Glomerular filtration/ultrafiltration is non-specific bulk movement of fluid from glomerulus into Bowman's capsule.

  • Option C: Tubular reabsorption moves valuable solutes from filtrate back into peritubular blood.

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.

Previous Question All Homeostasis MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App