system
Given the following post, respond as if you're commenting on Reddit:
human
Penicillin and our mitochondrial DNA--a dangerous combination? 

Hey guys. I recently learned about endosymbiont theory in my microbiology class. Let me make sure I have this first fact correct: The ribosomes of our mitochondria are 70s as opposed to our normal 80s ribosomes, right?

Antibiotics are essentially a weapon derived from fungi and synthesized by scientists to destroy the ribosomes of bacteria--70s ribosomes. Mitochondria were apparently once bacteria, right? Hence the similar ribosome structure... 

So I wonder: Do antibiotics ever backfire and damage our own mitochondrial ribosomes?
gpt
Great question, and the answer is "yes." There is at least one class of antibiotics that is known to be deleterious to the mitochondria: aminoglycosides.

The aminoglycosides, such as gentamycin, are commonly used antibiotics that are also toxic to the vestibular (balance) apparatus in human ears. They are particularly toxic to individuals with a particular mutation in their mitochondrial ribosomal RNA.

*Edit*: Removed some unclear speculation from the first paragraph.