Question

The inner membrane of mitochondria bears folding/fingers like projections, these

• A. Increase surface area
• B. Increase thickness of mitochondria
• C. keep all the substance away
• D. Increase protien oxidation

Answer 1

The correct option is A Increase surface area

• A mitochondrial membrane consists of two layers:-

1) An inner membrane- it is highly convoluted and folded into finger-like projections called cristae.

2) An outer membrane- that smooth and acts as a selective barrier to molecules from the cytoplasm.

• The folds of the inner membrane provide an increase in the surface area which accommodates more ATP molecules.