Biology Chemical Coordination SZABMU 2024 Reconduct
PMDC Verified Question 12 of 50
When a person intakes excess sugar diet his/her insulin level rises to:
A
Increase permeability of surface membrane
B
Increase blood glucose level
C
Deactivates enzymes in cells
D
Converts glycogen to glucose
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Increase permeability of surface membrane
Concept:

Glucose cannot passively diffuse into most mammalian cells; it requires a transport protein.

Solution:

  • A massive sugar spike triggers the pancreas to release large volumes of insulin.


  • Insulin binds to tyrosine-kinase receptors on muscle and fat cells, signaling vesicles packed with GLUT4 transporter proteins to fuse with the cell membrane.


  • This physically increases the permeability of the surface membrane to glucose, allowing it to rush out of the blood and into the cells for energy or storage.


Why other options are incorrect:

Insulin decreases (not increases) blood glucose. It activates (not deactivates) glycogen synthesis enzymes, and it converts glucose to glycogen, not the reverse.

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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