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The figure below shows the structure of a mitochondrion with its four parts labelled (A), (B), (C) and (D).
Select the part correctly matched with its function.
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- Part (D) : Outer membrane – gives rise to inner membrane by splitting
- Part (B) : Inner membrane – forms infoldings called cristae
- Part (C) : Cristae – possess single circular DNA molecule and ribosomes
- Part (A) : Matrix – major site for respiratory chain enzymes
Correct Option: B
The mitochondrial inner membrane forms infoldings known as cristae, which allow greater surface area for protein such as cytochrome to function properly and efficiently.
