NEET 2019 Biology question

Which of the following statements regarding mitochondria is incorrect?

(1)Outer membrane is permeable to monomers of carbohydrates, fats and proteins.
(2)Enzymes of electron transport are embedded in outer membrane.Correct
(3)Inner membrane is convoluted with infoldings.
(4)Mitochondrial matrix contains single circular DNA molecule and ribosomes.

Answer: (2)

Solution

The outer mitochondrial membrane is smooth and freely permeable to small molecules (monomers). The inner membrane is folded into cristae that increase surface area; it carries the enzymes of the electron transport chain and ATP synthase

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Question ID VK-092507