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The Antibiotic Streptomycin Inhibits Protein Synthesis in Bacteria

Question 56

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The antibiotic streptomycin inhibits protein synthesis in bacteria.If this antibiotic is added to a culture of animal cells, protein synthesis in the cytosol continues normally.However, over time, the population of mitochondria in the cell becomes depleted.Specifically, it is observed that the protein-synthesis machinery inside the mitochondria is inhibited.
A.Explain this observation based on what you know about the origins of the modern eukaryote.
B.What do you expect to observe if, in a new experiment, animal cells are treated with diphtheria toxin, a compound that is known to block cytosolic protein synthesis but does not have any impact on bacterial growth?

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A.If the mitochondria originated from an...

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