Given the Putative Ancestry of Giardia's Mitosome,what Should We Predict

Question

Given the putative ancestry of Giardia's mitosome,what should we predict is true of the mitosome?
A)It has electron transport systems that use oxygen as the final electron acceptor.
B)It has a double membrane.
C)It has thylakoids.
D)It contains microtubules, arranged in the "9 + 2 pattern."
E)It contains 80S (eukaryotic)ribosomes.

Accepted Answer

The putative ancestry of Giardia's mitosome suggests that it evolved from a single-membrane-bound anaerobic mitochondrion, which is why it is called a mitosome. Therefore, we can predict that the mitosome should have a double membrane. None of the other options are supported by the given information.