Biology Cell NUMS 2023
PMDC Verified Question 49 of 143
The folds of inner mitochondrial membrane of mitochondria are called:
A
Infolds
B
Cristae
C
Mesosome
D
Cisternae
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Cristae
Concept: Membrane folding increases surface area for maximum metabolic output.

Solution: The inner membrane of the mitochondrion folds inward to form structures known as cristae. These folds pack a massive amount of electron transport chain proteins and ATP synthase into a small volume.

Distractor Autopsy:
  • Cisternae: Flat sacs in the Golgi/ER.
  • Mesosomes: Membrane folds in bacteria.

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