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Which of the following statements regarding mitochondrial membrane is not correct ?
A
The outer membrane is permeable to all kinds of molecules
B
The enzymes of the electron transfer chain are embedded in the outer membrane
C
The inner membrane is highly convoluted forming a series of infoldings
D
The outer membrane resembles a sieve
Detailed Solution
A mitochondrion is bounded by two membranes, an outer membrane and an inner membrane.
The enzymes and carriers of the electron transport chain, along with ATP synthase, are embedded in the inner mitochondrial membrane, not in the outer membrane.
So the statement that the enzymes of the electron transfer chain are embedded in the outer membrane is not correct.
The inner membrane is highly convoluted, forming a series of infoldings called cristae, which increase its surface area.
The outer membrane contains channel proteins called porins, which make it freely permeable to small molecules; it is therefore described as resembling a sieve.
The other three statements are thus accepted as correct.
The enzymes and carriers of the electron transport chain, along with ATP synthase, are embedded in the inner mitochondrial membrane, not in the outer membrane.
So the statement that the enzymes of the electron transfer chain are embedded in the outer membrane is not correct.
The inner membrane is highly convoluted, forming a series of infoldings called cristae, which increase its surface area.
The outer membrane contains channel proteins called porins, which make it freely permeable to small molecules; it is therefore described as resembling a sieve.
The other three statements are thus accepted as correct.