Biology Chemical Coordination MDCAT 2016
PMDC Verified Question 47 of 50
____ hormone is antagonistic to insulin and causes increase in blood glucose level.
A
Glucagon
B
Calcitonin
C
Nor-epinephrine
D
Thyroxin
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Glucagon
Concept:

Homeostasis requires opposing pairs of hormones (antagonists) to keep blood levels within a narrow, healthy range.

Solution:

  • While insulin drastically forces glucose out of the blood and into cells, its direct antagonist is glucagon.


  • Glucagon ensures that during fasting or exercise, the liver breaks down glycogen reserves to maintain an adequate supply of blood glucose for the brain.


Why other options are incorrect:

Calcitonin regulates calcium. While thyroxin and norepinephrine influence metabolism and can mobilize energy, glucagon is the primary, direct antagonist to insulin in maintaining standard glucose homeostasis.

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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