Mitochondria are separated into two compartments,the matrix and the intermembrane space,by their inner and outer membranes.How does the presence of two compartments contribute to the function of mitochondria?
A)It enables mitochondrial DNA and ribosomes to remain separated from the functional compartment of the mitochondria.
B)The two compartments permit different but complementary functions to be accomplished in the organelle.
C)The double-membrane feature of mitochondria is what enables them to glycosylate proteins.

Question

Quizplus · Accepted Answer

The two compartments permit different but complementary functions to be accomplished in the organelle. The outer membrane allows for the exchange of molecules and ions between the cytosol and the intermembrane space, whereas the inner membrane is highly folded to increase surface area and contains the electron transport chain and ATP synthase. The matrix compartment contains enzymes necessary for the Krebs cycle and other metabolic processes. Having two separate compartments allows these different functions to be carried out without interference. Option A is incorrect because mitochondrial DNA and ribosomes are found within the matrix compartment, not separated from it. Option C is incorrect because mitochondria are not involved in glycosylation of proteins.

Mitochondria Are Separated into Two Compartments,the Matrix and the Intermembrane