Biology Cell SZABMU 2024
PMDC Verified Question 26 of 143
In the inner membrane of mitochondria which has many folds called cristae, there are granular particles called:
A
Cytochrome c
B
ATP Synthetase
C
Porins
D
Ubiquinone
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: ATP Synthetase
Concept: The morphological appearance of the inner mitochondrial membrane under electron microscopy reveals tiny, stalked structures.

Solution: The cristae are studded with granular, lollipop-shaped particles known as $F0$-$F1$ particles, which are the enzyme complexes known as ATP Synthetase (or ATP synthase). These are responsible for phosphorylating ADP into ATP.

Distractor Autopsy: Cytochrome c and Ubiquinone are electron carriers, but they do not form large, granular particles visible on the cristae. Porins are on the outer membrane.

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