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

Option: 1

Increase surface area

Option: 2

Increase thickness of mitochondria

Option: 3

keep all the substances away

Option: 4

Increase protein oxidation

Answers (1)


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.
  • Hence the correct option is a.
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