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 mitochondrial function?
A)It segregates the mitochondrial DNA and the ribosomes from the functional compartment of the mitochondria.
B)It permits different but complementary functions to be accomplished in the same organelle.
C)It enables the mitochondrion to glycosylate proteins more rapidly.
D)It allows the cell to conserve energy by reducing the frequency of endergonic reactions.

Question

Quizplus · Accepted Answer

The presence of two compartments allows for the segregation of different metabolic pathways, enabling different but complementary functions to be accomplished in the mitochondrion. For example, the matrix is the site of the Krebs cycle and oxidative phosphorylation, while the intermembrane space contains proteins involved in electron transfer and ATP synthesis. This compartmentalization allows for greater efficiency in cellular respiration. A, C, and D are incorrect as they do not accurately reflect the function of the mitochondrial compartments.

Mitochondria Are Separated into Two Compartments (The Matrix and the Intermembrane