Question

A mitochondrion has just been engulfed by a cup-shaped isolation membrane as it undergoes mitophagy. Before lysosomal fusion, how many membranes separate the cytosol from the matrix of the engulfed mitochondrion? A. 2 B. 3 C. 4 D. 5

Answer 1

Answer:

Option-C

Explanation:

Mitophagy refers to the process which is evolutionarily conserved in the organisms to remove the dysfunctional mitochondria in the cell.

The mitochondrial is degraded by the digestive organelles by engulfing the mitochondria.

The mitochondria are engulfed by the lysosome and then phagosome is formed which is double membrane structure. This phagosome matures into the autophagosome and now has the mitochondria engulfed.

Since the mitochondria contain toe layer and during mitophagy engulfed by the phagosome, therefore, there is a total of four-layer.These four layers separate the matric of the mitochondria with the cytosol.

Thus, Option-C is the correct answer.