It is hypothesized that mitochondria in eukaryotic cells evolved by endosymbiosis,when a larger cell ingested a smaller cell.If you were examining eukaryotic cells using a high-powered microscope,what evidence would you look for that would best support this hypothesis?
A) Nuclei within the mitochondria
B) Chloroplasts within the mitochondria
C) Two membranes around each mitochondrion
D) A rupture in the membrane of the cell
E) A second cell within each mitochondrion

Question

Quizplus · Accepted Answer

Two membranes around each mitochondrion suggest that mitochondria were once independent organisms before being engulfed by larger cells. The outer membrane is thought to be derived from the host cell's plasma membrane, while the inner membrane is thought to be derived from the engulfed cell's plasma membrane. This is consistent with the endosymbiosis hypothesis. Nuclei within the mitochondria or chloroplasts within the mitochondria would not support this hypothesis, as they are not expected to occur in mitochondria. A rupture in the membrane of the cell or a second cell within each mitochondrion would not be relevant to the endosymbiosis hypothesis.

It Is Hypothesized That Mitochondria in Eukaryotic Cells Evolved by Endosymbiosis,when